Document:

<PAGE>

                                                                   Exhibit 10.28

                        LASALLE BANK NATIONAL ASSOCIATION
                            135 South LaSalle Street
                             Chicago, Illinois 60603

                                  June 29, 2000

Near North National Title Corporation
Attn: Tommie
222 North  LaSalle Street
Chicago, Illinois 60601

         Re:      Payoff With Respect to Sale of a Portion of the Property
                  --------------------------------------------------------
                  Commonly Known as Kinzie Station by CMC Heartland Partners
                  ----------------------------------------------------------
                  ("Borrower") to MR Properties, LLC ("Purchaser"); Near North
                  ------------------------------------------------------------
                  National Title Corporation ALTA Commitment No. N0000390
                  -------------------------------------------------------

Dear Tommie:

         Reference is hereby made to that certain Commitment for Title Insurance
issued by Near North National Title Corporation and known as Commitment No.
N0000390 (the "Commitment").

         LaSalle Bank National Association ("LaSalle") has been informed by
Borrower that pursuant to the terms of that certain Purchase and Sale Agreement
between Borrower and Purchaser, Borrower will be selling a certain portion of
the land and improvements commonly known as Kinzie Station (the "Partial
Interest", as set forth on Schedule A of the Commitment) to Purchaser on June
29, 2000. Borrower will be using all the proceeds of such sale to make a partial
prepayment of the obligations and indebtedness owing by Borrower to LaSalle
under that certain Amended and Restated Loan and Security Agreement, dated as of
June 30, 1998 (the "Loan Agreement"), as amended from time to time, and Borrower
further agrees that as a result of the sale of the Partial Interest, LaSalle
will permanently reduce the Revolving Credit Commitment (as defined in the Loan
Agreement) by an amount equal to One Million Eight Hundred Thousand Dollars
($1,800,000.00).

         Upon confirmation of receipt by LaSalle of all the proceeds of the
above referenced sale, and upon the following liens and security interests of
LaSalle on the Partial Interest given to secure the Loan Agreement shall be
deemed to be released and terminated:

         1)       Mortgage and Security Agreement ("Mortgage") dated as of March
                  15, 1996, recorded with the Recorder of Deeds of Cook County
                  ("Recorder") on March 19, 1996 as Document No. 96206705;
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Near North National Title Corporation
June 29, 2000
Page 2

         2)       Amendment to Mortgage dated as of May 14, 1997, recorded with
                  the Recorder on July 3, 1997 as Document No. 97482836;

         3)       Second Amendment to Mortgage dated as of April 30, 1998,
                  recorded with the Recorder on May 15, 1998 as Document No.
                  98402750;

         4)       Third Amendment to Mortgage dated as of June 30, 1998,
                  recorded with the Recorder on July 8, 1998 as Document No.
                  98587670;

         5)       Fourth Amendment to Mortgage dated as of October 23, 1998,
                  recorded with the Recorder on October 23, 1998 as Document No.
                  98955930;

         6)       Fifth Amendment to Mortgage dated as of April 29, 1999,
                  recorded with the Recorder on July 6, 1999 as Document No.
                  99645348;

         7)       Sixth Amendment to Mortgage dated as of November 18, 1999,
                  recorded with the Recorder on December 28, 1999 as Document
                  No. 09200599;

         8)       Seventh Amendment to Mortgage dated as of March 20, 2000,
                  recorded with the Recorder on March 27, 2000 as Document No.
                  00214989;

         9)       Assignment of Rents and Leases ("Assignment") dated as of
                  March 15, 1996, recorded with the Recorder on March 18, 1996
                  as Document No. 96206706;

         10)      Amendment to Assignment dated as of May 14, 1997, recorded
                  with the Recorder on July 3, 1997 as Document No. 97482837;

         11)      Second Amendment to Assignment dated as of April 30, 1998,
                  recorded with the Recorder on May 15, 1998 as Document No.
                  98402749;

         12)      Third Amendment to Assignment dated as of June 30, 1998,
                  recorded with the Recorder on July 8, 1998 as Document No.
                  98587671;

         13)      Fourth Amendment to Assignment dated as of October 23, 1998,
                  recorded with the Recorder on October 23, 1998 as Document No.
                  98955929; and

         14)      Fifth Amendment to Assignment dated as of April 29, 1999,
                  recorded with the Recorder on July 6, 1999 as Document No.
                  99643349; and
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Near North National Title Corporation
June 29, 2000
Page 3

         15)      Sixth Amendment to Assignment dated as of November 18, 1999,
                  recorded with the Recorder on December 28, 1999 as Document
                  No. 09200600;

         16)      Seventh Amendment to Assignment dated as of March 20, 2000,
                  recorded with the Recorder on March 27, 2000 as Document No.
                  00214990; and

         17)      Security Interest of LaSalle, under a Financing Statement
                  executed by Borrower, and filed March 18, 1996 as Document No.
                  96 U 3429.

         LaSalle further agrees that, at the expense of the Borrower, it will as
soon as reasonably possible deliver such documents or take such reasonable
actions as may be required in connection with the release of the above liens and
security interests concerning the Partial Interest securing the Loan Agreement.
Notwithstanding the foregoing, nothing contained herein shall be deemed to
release or terminate any lien or security interest held by LaSalle with respect
to any property or improvements other than the Partial Interest.

         The parties hereto agree that executed facsimile counterparts hereof
will be treated as originals.

                                         Sincerely,

                                         LASALLE BANK NATIONAL ASSOCIATION

                                         By:
                                            ------------------------------------
                                         Name:
                                              ----------------------------------
                                         Title:
                                               ---------------------------------

AGREED AND ACCEPTED:

CMC HEARTLAND PARTNERS

By:
   ------------------------------------
Name:
     ----------------------------------
Title:
      ---------------------------------<PAGE>

                                                                   Exhibit 10.29

                        LASALLE BANK NATIONAL ASSOCIATION
                            135 South LaSalle Street
                             Chicago, Illinois 60603

                                 August 1, 2000

Near North National Title Corporation
Attn: Gunter
222 North  LaSalle Street
Chicago, Illinois 60601

         Re:      Payoff With Respect to Sale of a Portion of the Property
                  Commonly Known as Galewood Yard by CMC Heartland Partners
                  ("Borrower") to Loren Joseph Corp., ("Purchaser"); Near North
                  National Title Corporation ALTA Commitment No. N0000616
                  --------------------------------------------------------------

Dear Gunter:

         Reference is hereby made to that certain Commitment for Title Insurance
issued by Near North National Title Corporation and known as Commitment No.
N0000616 (the "Commitment").

         LaSalle Bank National Association ("LaSalle") has been informed by
Borrower that pursuant to the terms of that certain Purchase and Sale Agreement
between Borrower and Purchaser, Borrower will be selling the land and
improvements commonly known as Galewood Yard (the "Property", as set forth on
Schedule A of the Commitment) to Purchaser on August 1, 2000. Borrower will be
using all the proceeds of such sale to make a partial prepayment of the
obligations and indebtedness owing by Borrower to LaSalle under that certain
Amended and Restated Loan and Security Agreement, dated as of June 30, 1998 (the
"Loan Agreement"), as amended from time to time, and Borrower further agrees
that as a result of the sale of the Property, LaSalle will permanently reduce
the Revolving Credit Commitment (as defined in the Loan Agreement) by an amount
equal to Three Million Five Hundred Thousand Dollars ($3,500,000.00).

         Upon confirmation of receipt by LaSalle of all the proceeds of the
above referenced sale, all liens and security interests of LaSalle on the
Property given to secure the Loan Agreement shall be deemed to be released and
terminated, including but not limited to, the following:

         i)       Mortgage and Security Agreement ("Mortgage") dated as of June
                  30, 1998, recorded with the Recorder of Deeds of Cook County
                  ("Recorder") on July 8, 1998 as Document No. 98587672, and
                  re-recorded November 12, 1998 as Document No. 08017918;
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Near North National Title Corporation
August 1, 2000
Page 2

         ii)      Amendment to Mortgage dated as of October 23, 1998, recorded
                  with the Recorder on October 23, 1998 as Document No.
                  98955932;

         iii)     Second Amendment to Mortgage dated as of April 29, 1999,
                  recorded with the Recorder on July 6, 1999 as Document No.
                  99645350;

         iv)      Third Amendment to Mortgage dated as of November 18, 1999,
                  recorded with the Recorder on December 28, 1999 as Document
                  No. 09200659;

         v)       Fourth Amendment to Mortgage dated as of March 20, 2000,
                  recorded with the Recorder on March 27, 2000 as Document No.
                  00214991;

         vi)      Assignment of Rents and Leases ("Assignment") dated as of June
                  30, 1998, recorded with the Recorder on July 8, 1998 as
                  Document No. 98587673;

         vii)     Amendment to Assignment dated as of October 23, 1998, recorded
                  with the Recorder on October 23, 1998 as Document No.
                  98955931;

         viii)    Second Amendment to Assignment dated as of April 29, 1999,
                  recorded with the Recorder on July 6, 1999 as Document No.
                  99645351;

         ix)      Third Amendment to Assignment dated as of November 18, 1999,
                  recorded with the Recorder on December 28, 1999 as Document
                  No. 09200660;

         x)       Fourth Amendment to Assignment dated as of March 20, 2000,
                  recorded with the Recorder on March 27, 2000 as Document No.
                  00214992; and

         xi)      Security Interest of LaSalle, under a Financing Statement
                  executed by Borrower, and filed July 10, 1998 as Document No.
                  98U07389.

         LaSalle further agrees that, at the expense of the Borrower, it will as
soon as reasonably possible deliver such documents or take such reasonable
actions as may be required in connection with the release of the above liens and
security interests concerning the Property securing the Loan Agreement.
Notwithstanding the foregoing, nothing contained herein shall be deemed to
release or terminate any lien or security interest held by LaSalle with respect
to any property or improvements other than the Property.
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Near North National Title Corporation
August 1, 2000
Page 3

         The parties hereto agree that executed facsimile counterparts hereof
will be treated as originals.

                                         Sincerely,

                                         LASALLE BANK NATIONAL ASSOCIATION

                                         By:
                                            ------------------------------------
                                         Name:
                                              ----------------------------------
                                         Title:
                                               ---------------------------------

AGREED AND ACCEPTED:

CMC HEARTLAND PARTNERS

By:
   ------------------------------------
Name:
     ----------------------------------
Title:
      ---------------------------------

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