June 9, 2009 Campbell & Company, Inc. 2850 Quarry Lake Drive Baltimore, MD 21209 Attn: Ms. Theresa Becks Re: Management Agreement Renewals Dear Ms. Becks:

Exhibit 10.8(a)

June 9, 2009

Xxxxxxxx & Company, Inc.
0000 Xxxxxx Xxxx Xxxxx
Xxxxxxxxx, XX 00000

Attn: Xx. Xxxxxxx Xxxxx

     Re: Management Agreement Renewals

Dear Xx. Xxxxx:

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, 2010 and all other provisions of the Management Agreements will remain unchanged.

	•		Xxxxx Xxxxxx Potomac Futures Fund L.P.
	•		Citigroup Global Diversified Futures Fund L.P.
	•		Citigroup Diversified 2000 Futures Fund L.P.
	•		CMF Xxxxxxxx Master Fund L.P.

Please acknowledge receipt of this modification by signing one copy of this letter and returning it to the attention of Xx. Xxxxxxxx Xxxxx at the address above or fax to 000-000-0000. If you have any questions I can be reached at 000-000-0000.

Very truly yours,

CITIGROUP MANAGED FUTURES LLC
By:	/s/ Xxxxxxxx Xxxxx
	Xxxxxxxx Xxxxx
	Chief Financial Officer & Director
XXXXXXXX & COMPANY, INC.
By:	/s/ Xxxxxx X. Xxxxx
	Print Name: Xxxxxx X. Xxxxx

XX/sr