Document:

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                                                                    EXHIBIT 10.1

                                    EXHIBIT A

                            JOINT REPORTING AGREEMENT

         In consideration of the mutual covenants herein contained, each of the
parties hereto represents to and agrees with the other parties as follows:

         1. Such party acknowledges that it is required and eligible to file a
statement on Schedule 13G pertaining to the common stock of Kosan Biosciences
Incorporated to which this agreement is an exhibit, for the filing of the
information contained therein.

         2. Such party is responsible for timely filing of such statement and
any amendments thereto, and for the completeness and accuracy of the information
concerning such party contained therein; provided that no such party is
responsible for the completeness or accuracy of the information concerning the
other party making the filing, unless such party knows or has reason to believe
that such information is inaccurate.

         3. Such party agrees that such statement is filed by and on behalf of
each such party and that any amendment thereto will be filed on behalf of each
such party.

         This agreement may be executed in one or more counterparts, each of
which shall be deemed to be an original instrument, but all of such counterparts
taken together shall constitute but one agreement.

Dated: February 13, 2001

                                    AG-BIOTECH CAPITAL, LLC

                                    By: VIRIDIAN MANAGEMENT, LLC, its Manager

                                    By: /s/ Helene S. Cohen
                                        -------------------------------------
                                        Helene S. Cohen, President

                                    SAVIA, S.A. de C.V.

                                    By: /s/ Carlos Gerardo Mahaud
                                        -------------------------------------
                                        Name: Carlos Gerardo Mahaud
                                              -------------------------------
                                        Title: Attorney in Fact
                                               ------------------------------

                                    ALFONSO ROMO GARZA

                                    /s/ Alfonso Romo Garza
                                        -------------------------------------<PAGE>   1
                                                                    Exhibit 10.1

[Bank One Logo]

                                  [LETTERHEAD]

December 14, 2000

Mr. Thomas Graham
Director of Planning
Daisytek, Inc.
500 North Central Expressway
Plano, Texas.
75074-6763

Dear Tom:

We are pleased to inform you that Bank One Canada (the "Bank") has approved the
following credit facility for Daisytek Canada (the "Borrower") subject to the
Bank's continuing satisfaction with the Borrower's and Guarantors' managerial
and financial status. Disbursements under this facility are solely at the Bank's
discretion. Any disbursement on one or more occasion shall not commit the Bank
to make any subsequent disbursement.

This facility is subject to the following terms and conditions:
<TABLE>
<CAPTION>
<S>                           <C>
BORROWER:                      Daisytek Canada (the "Borrower")

GUARANTORS:                    Daisytek, Inc.
                               Daisytek International Corporation (the "Guarantors")

FACILITY:                      Segment (1)       Revolving Credit Facility, to include the issuance of Standby
                                                 Letters of Credit, expiring January 01, 2002.
                               Segment (2)       Foreign Exchange Facility

AMOUNT:                        Segment (1)       CAD $5,000,000 (or USD equivalent)
                               Segment (2)       USD $1,000,000 Foreign Exchange Facility

PURPOSE:                       Segment (1)       General Corporate Purposes
                               Segment (2)       To hedge against Foreign Exchange Rate fluctuations
</TABLE>
<PAGE>   2
[Bank One Logo]

Daisytek, Inc.
December 14, 2000
Page: 02

<TABLE>
<CAPTION>
<S>                           <C>               <C>
AVAILMENT:                     Segment (1)       Available by way of:

                                                 (a) Prime based loans which are advanced
                                                     automatically in increments of CAD $10,000
                                                     to cover the Borrower's cheque issuances; or

                                                 (b) Banker's Acceptances or Cost-of-Funds based
                                                     loans.

                                                 Surplus funds in the accounts would be automatically
                                                 applied to the Prime based loans.
</TABLE>

<TABLE>
<CAPTION>
<S>                            <C>
PRICING:                       At the Borrower's option:

                               Segment (1):
                               FOR CANADIAN DOLLARS BORROWINGS:

                               (a)    Bank One Canada's Prime Rate - Floating;

                               (b)    Bank One Canada's Banker's Acceptance Rate
                                      or Cost-of-Funds Rate (CDOR) plus the
                                      applicable spread, per the pricing grid in
                                      the proposed domestic facility (see
                                      Exhibit 1), plus 25 basis points (for
                                      Canadian dollar borrowings the reference
                                      rate will be CDOR instead of LIBOR); or

                               (c)    Applicable Margin (see Exhibit 1) for
                                      Standby Letters of Credit (minimum CAD
                                      $300.00 or USD $250.00).

                               FOR UNITED STATES DOLLAR BORROWINGS:

                               (a) Bank One Canada's USD Base Rate;

                               (b) LIBOR plus the applicable spread, per the pricing
                                   grid in the proposed domestic facility (see Exhibit 1), plus
                                   25 basis points;

                               INCREMENTS:
                               Banker's Acceptances, Cost-of-Funds Loans (CDOR)
                               and LIBOR loans are available in minimum amounts
                               of CAD $1,000,000 (or in the case of USD
                               borrowings - USD $1,000,000) and in increments of
                               CAD or USD $100,000 for periods of not less than
                               30 days and not greater than 180 days.
</TABLE>
<PAGE>   3
[Bank One Logo]

Daisytek, Inc.
December 14, 2000
Page: 03

PAYMENT
OF INTEREST:             Interest on Canadian Prime Based Loans and USD Base
                         Rate Loans are due monthly, in arrears.

                         Interest on Cost-of-Funds advances are due at
                         maturity and not less frequently than every 90 days.

REPAYMENT
OF PRINCIPAL:            Segment (1)       The Revolving Credit matures and is
                                           due in full on or before
                                           Maturity Date of January 01, 2002.

                         Segment (2)       Any unutilized portion of
                                           this Segment may be cancelled
                                           at any time, from time to time,
                                           without notice.

FACILITY FEE:            Per the final pricing grid for the proposed domestic
                         facility (see Exhibit 1)

SECURITY:                Unsecured.

NEGATIVE PLEDGE:         The Borrower will not pledge or otherwise
                         encumber its assets as long as the revolving
                         credit remains in place, with the exception of
                         permitted encumbrances, which will be negotiated
                         prior to closing. In the event that collateral is
                         taken under the proposed domestic facility, the
                         subject facility will become secured by all
                         accounts receivable and inventory of the
                         Borrower.

SUPPORTING
DOCUMENTS:               1.   Guarantee of Daisytek, Inc. and Daisytek
                              International Corporation, with
                              Supporting Resolutions.

                         2.   Letter Loan Agreement (enclosed).

                         3.   Promissory Note (enclosed).

                         4.   Complete Signing Authorization Package
                              (Borrowing Resolution, Signature Cards, List
                              of Officers and Directors) (enclosed).

                         5.   Articles of Incorporation for the Borrower
                              (held)

                         6.   Forward Exchange Forward Contract Request
                              (enclosed).
<PAGE>   4
[Bank One Logo]

Daisytek, Inc.
December 14, 2000
Page: 04

SERVICING
REQUIREMENTS:            1.       Quarterly income statement and balance sheet
                                  of the Borrower within 60 days of each
                                  quarter-end.

                         2.       Annual audited financial statements of the
                                  Guarantors within 120 days of fiscal year-end.

                         3.       Quarterly financial statements of the
                                  Guarantors within 60 days of each
                                  quarter-end; and

                         4.       Quarterly Certificate of Compliance from the
                                  Guarantors confirming they are not in breach
                                  of Covenants under any of their debts.

CROSS-DEFAULT:           The Borrower will be deemed to be in default of the
                         Agreement if Daisytek, Inc. and/or Daisytek
                         International Corporation are in default under any of
                         their Loan Agreements. A copy of the current domestic
                         revolver must be provided to the Bank, as well as any
                         material amendments, waivers, extensions or replacement
                         facilities.

PRINCIPAL
COVENANTS:               The Borrower covenants and agrees to the
                         following with the Bank while this Agreement
                         is in effect or any advances are outstanding.

                         1.       To pay all sums of many when due under this
                                  Agreement.

                         2.       To file all material tax returns which are
                                  or will be required; to pay or make
                                  provision for payment of all material taxes
                                  which are or will become due and payable;
                                  and to provide adequate reserves for the
                                  payment of any tax.

                         3.       To maintain its corporate existence as a valid
                                  subsisting corporate entity.

                         4.       Other covenants, representations and
                                  warranties that are typical for a
                                  transaction of this nature shall be
                                  incorporated into the Loan Agreement.
<PAGE>   5
[Bank One Logo]

Daisytek, Inc.
December 14, 2000
Page: 05

REIMBURSEMENT
OF EXPENSES:             The expenses of the Bank, whether
                         incurred prior to or subsequent to closing, in
                         investigation, preparation, negotiation,
                         documentation, syndication, administration and
                         collection will be for the account of the
                         Borrower, including expenses of and fees for
                         solicitors for the Bank (who may or may not be
                         employees of the Bank) and other advisors and
                         professionals engaged by the Bank.

ENUREMENT:               This agreement shall be binding upon and enure to the
                         benefit of the Bank, the Borrower, the Guarantor and
                         their respective successors and permitted assigns.

All other terms and conditions of the Loan Agreement dated December 23, 1997
remain in effect and in full force.

If the above terms and conditions are acceptable to you, as they are to the
Bank, please sign and return the enclosed acceptance copy of this letter as soon
as possible.

Sincerely,

BANK ONE CANADA                             ACCEPTED BY:

/s/ illegible                               DAISYTEK CANADA
-----------------------------
Signature
                                            /s/ Ralph Mitchell
                                            -----------------------------
                                            Signature
:enc.
                                            Date: 12-20-00
<PAGE>   6
[Bank One Logo]

Daisytek, Inc.
December 14, 2000
Page: 06

                                            ACKNOWLEDGED BY:

                                            DAISYTEK, INC.

                                            /s/ Ralph Mitchell
                                            ------------------------------
                                            Signature

                                            Date: 12-20-00

                                            ACKNOWLEDGED BY:

                                            DAISYTEK INTERNATIONAL
                                            CORPORATION

                                            /s/ Ralph Mitchell
                                            ------------------------------
                                            Signature

                                            Date: 12-20-00

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