Smith Barney Futures Management LLC
                         388 Greenwich Street, 7th Floor
                          New York, New York 10013-2396






May 31, 2000



Rabar Market Research, Inc.
10 Bank St. - Suite 830
White Plains, N.Y. 10606

Attention:  Mr. Paul Rabar

         Re:      Management Agreement Renewals

Dear Mr. Rabar:

We are  writing  with  respect  to your  management  agreements  concerning  the
commodity pools to which reference is made below (the "Management  Agreements").
We are extending the term of the Management  Agreements through June 30, 2001and
all other provisions of the Management Agreements will remain unchanged.

                       Smith Barney Principal Plus Futures Fund L.P.
                       Smith Barney Diversified Futures Fund L.P.
                       Salomon Smith Barney Global Diversified Futures Fund L.P.
                       BBK Global  Futures Fund
                       BBK Global Futures Plus Fund
                       Smith Barney Diversified 2000 Futures Fund





Please  acknowledge  receipt of this  modification  by signing  one copy of this
letter and returning it to the  attention of Mr. Daniel  Dantuono at the address
above or fax to  212-723-8985.  If you have any  questions  I can be  reached at
212-723-5416.

Very truly yours,

SMITH BARNEY FUTURES MANAGEMENT LLC


By:
         Daniel A. Dantuono
         Chief Financial Officer,
         Director & Treasurer

AGREED AND ACCEPTED

RABAR MARKET RESEARCH, INC.




DAD/sr