Document:

EXHIBIT
      10.1

    

    

    FORM
      OF MORTGAGE LOAN PURCHASE AGREEMENT

    

    This
      Mortgage Loan Purchase Agreement (the "Agreement") dated as of December 1,
      2007
      is between CitiMortgage, Inc. ("CMI" or the "Seller") and Citicorp Mortgage
      Securities, Inc., a Delaware corporation ("CMSI"). The Seller agrees to sell,
      and CMSI agrees to purchase, the mortgage loans originated or acquired by CMI
      as
      described and set forth in the Mortgage Loan Schedule attached as exhibit B
      (the
      "mortgage loans") to the Pooling and Servicing Agreement dated as of December
      1,
      2007 (the "Pooling Agreement"), between CMSI, CMI, U.S. Bank National
      Association, a national banking association, in its individual capacity and
      as
      Trustee (the "Trustee"), and Citibank, N.A., in its individual capacity and
      as
      Paying Agent, Certificate Registrar and Authentication Agent, relating to the
      issuance of Citicorp Mortgage Securities Trust, Series 2007-9 REMIC Pass-Through
      Certificates class A, class B and residual certificates. Terms used without
      definition herein shall have the respective meanings assigned to them in the
      Pooling Agreement or, if not defined therein, in the Senior Underwriting
      Agreement dated November 16, 2007 among CMSI, Citigroup Inc. and Citigroup
      Global Markets Inc. (the "Senior Underwriter") (the "Senior Underwriting
      Agreement") and in the Subordinated Underwriting Agreement dated November 20,
      2007 among CMSI, Citigroup Inc. and Banc of America Securities LLC (the
      "Subordinated Underwriter" and, together with the Senior Underwriter, the
      "Underwriters") (the "Subordinated Underwriting Agreement" and, together with
      the Senior Underwriting Agreement, the "Underwriting Agreements").

    

    1. Purchase
      Price.
      The
      purchase price (the "Purchase Price") for the mortgage loans shall consist
      of
      (a) cash in the amount of _______________% of the aggregate scheduled principal
      balance thereof as of the cut-off date, plus accrued interest thereon at the
      rate of 6.25% per annum on the mortgage loans in pool I and 5.50% per annum
      on
      the mortgage loans in pool II, from and including the cut-off date to but
      excluding the closing date, (b) the class IA-IO and IIA-IO certificates, (c)
      the
      class LR certificates, and (d) the class PR certificates. Such cash shall be
      payable by CMSI to the Seller on the closing date in same-day funds, and the
      Seller will receive on the closing date: (a) the class IA-IO and IIA-IO
      certificates and (b) the class LR and class PR certificates evidencing the
      residual interests in the lower-tier REMIC and the pooling REMIC, respectively.
      If CMSI for any reason shall repay to any Underwriter any portion of the price
      paid to CMSI by any Underwriter pursuant to the Underwriting Agreements, the
      Seller shall simultaneously and in the same manner repay to CMSI a proportionate
      amount of the Purchase Price as such repayment to any Underwriter.

    

    Upon
      payment of the Purchase Price, the Seller shall transfer, assign, set over
      and
      otherwise convey to CMSI without recourse all of the Seller's right, title
      and
      interest in and to the mortgage loans, including all interest and principal
      received or receivable by the Seller on or with respect to the mortgage loans
      (other than payments of principal and interest due and payable on the mortgage
      loans on or before the cut-off date and prepayments of principal on the mortgage
      loans received or posted prior to the close of business on the cut-off date),
      together with all of the Seller's right, title and interest in and to the
      proceeds of any related title, hazard or other insurance policies and Primary
      Mortgage Insurance Certificates. The Seller agrees to deliver to CMSI all
      documents, instruments and agreements required to be delivered by CMSI to the
      Trustee under the Pooling Agreement and such other documents, instruments and
      agreements as CMSI shall reasonably request. CMSI hereby directs the Seller
      to
      execute and deliver to the Trustee assignments of the Mortgages to the Trustee
      (and endorsements of any Mortgage Notes relating thereto) in recordable form.
      Such assignments and endorsements shall not affect the rights of the parties
      hereto or to the Pooling Agreement.

    
      
         

      

      
        1

        
          

        

      

      
         

      

    

    

    2. Representations.
      The
      Seller hereby represents and warrants to CMSI (i) that CMSI's representations
      and warranties pursuant to the Pooling Agreement to the Trustee with respect
      to
      the mortgage loans are true and correct and (ii) that the Seller has not dealt
      with any broker, investment banker, agent or other person (other than CMSI
      and
      the Underwriters) who may be entitled to any commission or compensation in
      connection with the sale of the related mortgage loans. The Seller hereby agrees
      to cure any breach of such representations and warranties in accordance with
      the
      terms of the Pooling Agreement.

    

    3. Underwriting.
      The
      Seller hereby agrees to furnish any and all information, documents,
      certificates, letters or opinions reasonably requested by CMSI in order to
      perform any of its obligations or satisfy any of the conditions on its part
      to
      be performed or satisfied at or prior to the closing date.

    

    4. Costs.
      CMSI
      shall pay all expenses incidental to the performance of its obligations under
      the Underwriting Agreements, including without limitation (i) any recording
      fees
      or fees for title policy endorsements and continuations, (ii) the expenses
      of
      preparing, printing and reproducing the Registration Statement, the Prospectus,
      the Underwriting Agreements, the Pooling Agreement and the certificates and
      (iii) the cost of delivering the certificates to the offices of The Depository
      Trust Company or the Underwriters, as the case may be.

    

    5. Indemnification.
      The
      Seller hereby agrees to indemnify, defend and hold harmless CMSI against any
      and
      all losses, claims, damages or liabilities (i) resulting from the Seller's
      failure to perform any of its obligations hereunder, (ii) resulting from the
      inaccuracy of the Seller's representations and warranties herein or of CMSI's
      representations and warranties in the Pooling Agreement or (iii) insofar as
      such
      losses, claims, damages or liabilities (or actions or demands for reimbursement
      or contribution in respect thereof) arise out of or are based upon information
      relating to the Seller or the mortgage loans pursuant to the Underwriting
      Agreements.

    

    6. Purchase
      and Sale; Security Interest.
      The
      parties hereto intend the conveyance by the Seller to CMSI of all of its right,
      title and interest in and to the mortgage loans pursuant to this Agreement
      to
      constitute a purchase and sale and not a loan. Notwithstanding the foregoing,
      to
      the extent that such conveyance is held not to constitute a sale under
      applicable law, it is intended that this Agreement shall constitute a security
      agreement under applicable law and that the Seller shall be deemed to have
      granted to CMSI a first priority security interest in all of the Seller's right,
      title and interest in and to the mortgage loans.

    

    7. Notices.
      All
      demands, notices and communications hereunder shall be in writing, shall be
      effective only upon receipt and shall, if sent to CMSI be addressed to it at
      1000 Technology Drive, O’Fallon, Missouri 63368, Attn: Daniel P. Hoffman or if
      sent to Seller be addressed to it at 1000 Technology Drive, O’Fallon, Missouri
      63368, Attn: General Counsel.

    

    
      
         

      

      
        2

        
          

        

      

      
         

      

    

    8. Trustee
      Beneficiary.
      The
      representations and agreements made by the Seller in this Agreement are made
      for
      the benefit of, and may be enforced by, the Trustee, and the holders of
      certificates to the same extent that the Trustee and the holders of
      certificates, respectively, have rights against CMSI under the Pooling Agreement
      in respect of representations and agreements made by CMSI therein.

    

    9. Cross-Receipt.
      The
      Seller, by executing this Agreement below, hereby acknowledges receipt of the
      Purchase Price from CMSI. CMSI, by executing this Agreement below, hereby
      acknowledges receipt of the Mortgage Loans from the Seller.

    

    10. Miscellaneous.
      This
      Agreement shall be governed by and construed in accordance with the laws of
      the
      State of New York. Neither this Agreement nor any term hereof may be changed,
      waived, discharged or terminated except by a writing signed by the party against
      whom enforcement of such change, waiver, discharge or termination is sought.
      This Agreement may not be changed in any manner which would have a material
      adverse affect on holders of any class of certificates without the prior written
      consent of the Trustee. The Trustee shall be protected in consenting to any
      such
      change to the same extent provided in section 10 of the Pooling Agreement.
      This
      Agreement may be signed in any number of counterparts, each of which shall
      be
      deemed an original, which taken together shall constitute one and the same
      instrument. This Agreement shall bind and inure to the benefit of and be
      enforceable by CMSI and the Seller and their respective successors and assigns;
      provided,
      however,
      that
      this Agreement cannot be assigned by either party without the consent of the
      other party hereto, and any assignment hereof without such consent shall be
      void.

    
      
         

      

      
        3

        
          

        

      

      
         

      

    

    IN
      WITNESS WHEREOF, CMSI and the Seller have caused this Agreement to be duly
      executed by their respective officers as of the day and year first above
      written.

    

    

    CITIMORTGAGE,
      INC.

    

    

    

    By:     

    Deborah
      A. Snow

    Vice
      President

    

    

    

    CITICORP
      MORTGAGE SECURITIES, INC.

    

    

    

    By:     

    David
      L.
      Hicks

    Assistant
      Vice President

    
      
         

      

      
        4“Providing
      Mobile Solutions at the Intersection of Communities and
      Brands”

    

    December
      6, 2007

    

    Mr.
      Shubhro Sen

    Via
      Hand Delivery

    

    Dear
      Shubhro,

    

    This
      letter agreement (this “Agreement”)
      memorializes our mutual agreement to terminate your employment pursuant to
      that
      certain letter agreement, dated August 12, 2006, as amended by that certain
      letter agreement, dated July 26, 2007 (collectively, the “Employment
      Agreement”),
      effective December 6, 2007.

    

    By
      signing below, you and g8wave Holdings, Inc. (the “Company”)
      hereby
      agree to the provisions set forth below, including, the
      release of claims set forth in Section 3. 

    

    
      	 	
              1.

            	
              Termination
                Date
                -
                Your employment with the Company shall terminate effective December
                6,
                2007 (the “Termination
                Date”).
                As of the Termination Date, all amounts payable by the Company to
                you
                pursuant to the Employment Agreement shall terminate, except that
                you will
                be entitled to receive any salary (but not bonus) and unused vacation
                time
                accrued through the Termination Date (the “Accrued
                Compensation”).
                A check for the Accrued Compensation accompanies this Agreement.
                In
                addition, effective as of the Termination Date, any benefits you
                currently
                have under Company-provided benefit plans, programs, or practices
                will
                terminate, except as required by federal or state law, or as otherwise
                described below. 

            

    

     

    
      	 	
              2.

            	
              Description
                of Severance Benefits
                -
                In return for your timely execution, non-revocation,
                and return of this Agreement, including the release of claims below,
                the
                Company agrees to provide you with the severance benefits outlined
                below
                (collectively, the “Severance
                Benefits”):

            

    

     

    
      	 	
              a)

            	
              Severance
                Pay.
                The Company agrees to pay you severance pay in the form of base salary
                continuance through December 28, 2007. The Severance Pay shall be
                subject
                to all applicable local, state and federal taxes and withholdings
                and will
                be paid to you on the eighth day following your timely return of
                the
                executed Agreement.
                You will not be eligible for, nor shall you have a right to receive,
                any
                payments from the Company following the Termination Date other than
                the
                Severance Pay.
                In
                addition, for a period of six (6) months following your Termination
                Date,
                the Company will maintain your existing health insurance and dental
                insurance coverages, fund seventy-five percent (75%) of the monthly
                health
                insurance premium and fund one hundred percent (100%) of the monthly
                dental insurance premium. Your contribution amount will be deducted
                from
                your Severance Pay.

            

    

     

    
      	 	
              b)

            	
              Restricted
                Stock Units.
                The Company agrees to accelerate the vesting of the restricted stock
                units
                granted to you pursuant to that certain Restricted Stock Unit Agreement,
                dated August 20, 2007 (the “RSU
                Agreement”)
                by thirteen and three-quarter months. The end result being that you
                will
                be fully in restricted stock units covering 110,000 shares of the
                Company’s common stock. 

            

    

    
       

    

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

    
      	 	
              3.

            	
              Release -
                In consideration of the Severance Benefits, which you acknowledge
                you
                would not otherwise be entitled to receive, you (on behalf of yourself,
                your agents, assignees, attorneys,
                successors, assigns, heirs and executors) hereby fully, forever,
                irrevocably and unconditionally release, remise and discharge the
                Company,
                including, but not limited to, its affiliates, subsidiaries, parent
                companies, predecessors and successors and all of their respective
                past
                and present officers, directors, stockholders, partners, members,
                employees, agents, representatives, plan administrators, attorneys,
                insurers and fiduciaries (each
                in their individual and corporate capacities) (collectively,
                the “Released
                Parties”)
                from any and all claims, charges, complaints, demands, actions, causes
                of
                action, suits, rights, debts, sums of money, costs, accounts, covenants,
                contracts, agreements, promises, doings, omissions, damages, executions,
                obligations, liabilities, and expenses (including attorneys’ fees and
                costs) of every kind and nature which you ever had or now have, whether
                known or unknown to you, including without limitation all claims
                arising
                out of or relating to your employment with or separation from the
                Company,
                all employment discrimination claims under Title VII of the Civil
                Rights
                Act of 1964, 42 U.S.C. §2000e et
                seq.,
                the Americans With Disabilities Act of 1990, 42 U.S.C., §12101
                et seq.,
                the
                Age Discrimination in Employment Act, 29 U.S.C. §621 et seq.;
                the Family and Medical Leave Act of 1993, 29 U.S.C. §2601 et seq.,
                the Massachusetts Fair Employment Practices Act, M.G.L. c.151B, §1
                et seq.;
                and any and all other similar applicable federal and state statutes,
                all
                as amended; all claims arising out of the Fair Credit Reporting Act,
                15
                U.S.C. §1681 et seq.;
                the Employee Retirement Income Security Act of 1974 (“ERISA”),
                29 U.S.C. §1001 et seq.;
                the Massachusetts Civil Rights Act, M.G.L. c.12 §§11H and 11I; the
                Massachusetts Equal Rights Act, M.G.L. c.93 §102 and M.G.L. c.214, §1C;
                the Massachusetts Labor and Industries Act, M.G.L. c. 149, §1 et seq.;
                the Massachusetts Privacy Act, M.G.L. c.214, §1B, and the Massachusetts
                Maternity Leave Act , M.G.L. c. 149, §105(d), all
                as amended; all common law claims including, but not limited to,
                actions
                in tort, defamation and breach of contract; all claims to any non-vested
                ownership interest in the Company, contractual or otherwise, including,
                but not limited to, claims to stock or stock options; and any claim
                or
                damage arising out of your employment with or separation from the
                Company
                (including a claim for retaliation) under any common law theory or
                any
                federal, state or local statute or ordinance not expressly referenced
                above;
                provided, however, that nothing in this Agreement prevents you from
                filing, cooperating with, or participating in any proceeding before
                the
                EEOC or a state or federal Fair Employment Practices Agency (except
                that
                you acknowledge that you may not be able to recover any monetary
                benefits
                in connection with any such claim, charge or proceeding). To
                ensure that the release in this section is fully enforceable in accordance
                with its terms, you agree to waive any protection that may exist
                under any
                statute and under any principle of common law of the United States
                or any
                and all States.

            

    

     

    
      	 	
              4.

            	
              Post-Termination
                Obligations -
                Effective as of the Termination Date, the Employment Agreement shall
                terminate and no longer have any force or effect, except that the
                following provisions of the Employment Agreement shall survive: Sections
                8
                (Confidentiality), 9 (Covenant Not to Compete), 10 (Assignment of
                Inventions), 11 (Non-Solicitation), 13 (Taxes), and 14 (Entire Agreement).
                In the event of a conflict between the Employment Agreement and this
                Agreement, the terms of this Agreement shall control to the extent
                of such
                conflict.

            

    

    
       

    

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

    
      	 	
              5.

            	
              Return
                of Company Property
                -
                You represent and confirm that you will immediately return to
                the Company all Company property and equipment in your possession
                or
                control, including, but not limited to, keys, files, equipment (including,
                but not limited to, computer hardware, software and printers, wireless
                handheld devices, cellular phones, and pagers), identification badges,
                customer information, customer lists, employee lists, Company files,
                notes, contracts, records, business plans, financial information,
                specifications, computer-recorded information, tangible property,
                and any
                other materials of any kind which contain or embody any proprietary
                or
                confidential material of the Company (including all reproductions).
                You
                also agree to leave intact all electronic Company documents, including
                those that you developed or helped develop during your employment.
                You
                further agree to immediately cancel upon receipt of this Agreement
                all
                accounts for your benefit, if any, in the Company’s name including, but
                not limited to, credit cards, telephone charge cards, cellular phone
                accounts, pager accounts, and computer accounts.
                

            

    

     

    
      	 	
              6.

            	
              Business
                Expenses
                -
                Your reimbursable expenses which were incurred prior to the Termination
                Date and for which you have submitted documentation reasonably acceptable
                to the Company and which are approved by the Company will be paid
                to you
                via electronic transfer no later than December 28,
                2007.

            

    

     

    
      	 	
              7.

            	
              Non-Disparagement
                -
                You understand and agree that, as a condition for payment to you
                of the
                Severance Benefits, you shall not at any time make any false, disparaging,
                derogatory or defamatory statements in public or in private regarding
                the
                Company or any of the other Released Parties, or regarding the Company’s
                business affairs, business prospects and financial condition to
                any party, including, but not limited to, any media outlet, industry
                group, financial institution, educational institution or current
                or former
                employee, consultant, client or customer of the
                Company.

            

    

     

    
      	 	
              8.

            	
              Confidentiality
                -
                To the extent permitted by law, you understand and agree that the
                terms
                and contents of this Agreement, and the contents of the negotiations
                and
                discussions resulting in this Agreement, shall be maintained as
                confidential by
                you and your representatives,
                and shall not be disclosed to any third party, except to the extent
                required by federal or state law, the rules and regulations of the
                Securities Exchange Commission, in
                response to a lawful subpoena,
                or
                as otherwise agreed to in writing by an authorized agent for the
                Company.

            

    

     

    
      	 	
              9.

            	
              Age
                Discrimination in Employment Act
                -
                This
                Agreement is intended to comply with the Older Workers Benefit Protection
                Act of 1990 with regard to your waiver of claims under the Age
                Discrimination in Employment Act ("ADEA").

            

    

     

    
      	 	
              a)

            	
              You
                are specifically waiving rights and claims under the
                ADEA.

            

    

     

    
      	 	
              b)

            	
              The
                waiver of rights under the ADEA does not extend to any rights or
                claims
                arising after the date you execute this
                Agreement.

            

    

     

    
      	 	
              c)

            	
              You
                acknowledge that you have been advised to consult with an attorney
                before
                executing this Agreement and that you have had the opportunity to
                consult
                an attorney of your choice with respect to all terms and conditions
                of
                this Agreement and to have the advice of counsel with respect to
                your
                decision to enter into and sign this
                Agreement.

            

    

    
       

    

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

    
      	 	
              d)

            	
              You
                acknowledge that you are entering into this Agreement of your own
                free
                will.

            

    

     

    
      	 	
              e)

            	
              You
                acknowledge that the Company offered you twenty-one (21) days to
                consider
                the terms and conditions of this Agreement, to consult with counsel
                of
                your choice, and to decide whether to enter into and sign this Agreement,
                although you may return the Agreement before that time, if you so
                desire.  

            

    

     

    
      	 	
              10.

            	
              Resignation - By
                signing below, you are hereby resigning from any and all positions
                as an
                officer, director, or employee that you held with the Company or
                any of
                its subsidiaries.

            

    

     

    
      	 	
              11.

            	
              COBRA
                -
                You may be eligible to continue to
                receive group medical and dental insurance pursuant to the Consolidated
                Omnibus Budget Reconciliation Act of 1985 ("COBRA").
                If you are eligible for and elect continuation of group medical and
                dental
                insurance under COBRA, all group medical and dental insurance premium
                costs will be paid by you on a monthly basis for as long as, and
                to the
                extent that, you remain eligible under COBRA. You will receive additional
                information under separate cover regarding your rights under COBRA,
                if
                any.

            

    

     

    
      	 	
              12.

            	
              Amendment
                -
                This Agreement shall be binding upon the parties and may not be modified
                in any manner, except by an instrument in writing signed by the duly
                authorized representatives of the parties. This Agreement is binding
                upon
                and shall inure to the benefit of the parties and their respective
                agents,
                permitted assigns, heirs, executors, successors and
                administrators.

            

    

     

    
      	 	
              13.

            	
              Waiver
                of Rights
                -
                No delay or omission by the Company in exercising any right under
                this
                Agreement shall operate as a waiver of that or any other right. A
                waiver
                or consent given by the Company on any one occasion shall be effective
                only in that instance and shall not be construed as a bar or waiver
                of any
                right on any other occasion.

            

    

     

    
      	 	
              14.

            	
              Validity
                -
                Should any provision of this Agreement be declared or be determined
                by any
                court of competent jurisdiction to be illegal or invalid, the validity
                of
                the remaining parts, terms or provisions shall not be affected thereby
                and
                said illegal or invalid part, term or provision shall be deemed not
                to be
                a part of this Agreement.

            

    

     

    
      	 	
              15.

            	
              Nature
                of Agreement
                -
                You understand
                and agree that this Agreement is a severance agreement and does not
                constitute an admission of liability on the part of the
                Company.

            

    

     

    
      	 	
              16.

            	
              Voluntary
                Assent
                -
                You affirm that no other promises or agreements of any kind have
                been made
                to or with you by any person or entity whatsoever to cause you to
                sign
                this Agreement, and that you fully understand the meaning and intent
                of
                this Agreement. You state and represent that you have had an opportunity
                to review the terms of this Agreement with an attorney. You further
                state
                and represent that you have carefully read this Agreement, understand
                its
                contents, freely and voluntarily assent to all of its terms and
                conditions, and sign your name of your own free
                act.

            

    

    
       

    

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

    
      	 	
              17.

            	
              Applicable
                Law
                -
                This Agreement shall be interpreted and construed by the laws of
                the
                Commonwealth of Massachusetts, without regard to conflict of laws
                provisions. You hereby irrevocably submit to and acknowledge and
                recognize
                the jurisdiction of the courts of the Commonwealth of Massachusetts,
                or if
                appropriate, a federal court located in Massachusetts (which courts,
                for
                purposes of this Agreement, are the only courts of competent jurisdiction)
                over any suit, action or other proceeding arising out of, under or
                in
                connection with this Agreement or its subject
                matter.

            

    

     

    
      	 	
              18.

            	
              Entire
                Agreement
                -
                This Agreement contains and constitutes the entire understanding
                and
                agreement between the parties with respect to your severance benefits
                and
                the release of claims against the Company and cancels all previous
                oral
                and written negotiations, agreements, commitments or writings in
                connection therewith.

            

    

     

    If
      you
      are in agreement with the foregoing, please return all pages of this letter
      to
      Habib Khoury or fax to William Duke at 617-450-8786. If you have any questions
      about the matters covered in this letter, please feel free to contact
      me.

     

    Sincerely,

     

    G8WAVE
      HOLDINGS, INC.

     

    
      
        	
                By,

              	
                /s/
                  Habib
                  Khoury                                     
                  

              	 
	
                 

              	
                Habib
                  Khoury 

              	 
	
                 

              	
                President
                  and Chief Executive Officer

              	 

      

    

     

    I
      hereby
      agree to the terms and conditions set forth above. I have been given at least
      twenty-one (21) days to consider this Agreement and I have chosen to execute
      this on the date below. I intend that this Agreement will become a binding
      agreement between me and the Company.

     

    

      
        	/s/
Shubhro
                Sen	 	
                Date:

              	
                December
                  27,  

              	
                 2007

              

      

    

     

    Shubhro
      Sen

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