Global Diversified Futures Fund (GDFF) 10-K 2005 FY Annual report

Exhibit 10.19

May 31, 2005

Campbell & Company, Inc.
Court Tower Building
210 West Pennsylvania Avenue
Suite 770
Towson, MD 21204

Attn: Ms. Terry Becks

Re: Management Agreement Renewals

Dear Ms. Becks:

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, 2006 and all other provisions of the Management Agreements will remain unchanged.

•	Smith Barney Potomac Futures Fund L.P.

•	Smith Barney Diversified Futures Fund L.P.

•	Smith Barney Diversified Futures Fund L.P. II

•	Smith Barney Global Markets Futures Fund L.P.

•	Smith Barney Global Diversified Futures Fund L.P.

•	Salomon Smith Barney Diversified 2000 Futures Fund L.P.

•	AURORA 2001

•	AURORA III

•	CMF Campbell Master Fund L.P.

Please acknowledge receipt of this modification by signing one copy of this letter and returning it to the attention of Mr. Daniel McAuliffe at the address above or fax to 212-793-1986. If you have any questions I can be reached at 212-559-5043.

Very truly yours,

CITIGROUP MANAGED FUTURES LLC

By: /s/ Daniel R. McAuliffe, Jr.         
Daniel R. McAuliffe, Jr.

Chief Financial Officer & Director

CAMPBELL & COMPANY, INC.

By: /s/ Theresa Becks             

Print Name: Theresa Becks                                         

DRMcA/sr

June 15, 2005

Aspect Capital Management Ltd.
Nations House — 8^th Floor
103 Wigmore Street
London W1U 1QS, U.K.

Attention: Mr. Anthony Todd

Re: Management Agreement Renewals

Dear Mr. Todd:

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, 2006 and all other provisions of the Management Agreements will remain unchanged.

	•	Salomon Smith Barney Global Diversified Futures Fund L.P.

	•	Salomon Smith Barney Diversified 2000 Futures Fund L.P.

	•	Citigroup Diversified Futures Fund L.P.

	•	Alera 100

Please acknowledge receipt of this modification by signing one copy of this letter and returning it to the attention of Mr. Daniel McAuliffe at the address above or fax to 212-793-1986. If you have any questions I can be reached at 212-559-5043.

Very truly yours,

CITIGROUP MANAGED FUTURES LLC

By: /s/ Daniel R. McAuliffe, Jr.                

Daniel R. McAuliffe, Jr.
Chief Financial Officer & Director

By: /s/ Anthony Todd                                   

Print Name: Anthony Todd                        

DRMcA/sr

1

June 15, 2005

Altis Partners Limited
5^th Fl. Sackville House
40 Piccadilly
W1J0DR England

Attention: Mr. Stephen Hedgecock

Re: Management Agreement Renewals

Dear Mr. Hedgecock:

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, 2006 and all other provisions of the Management Agreements will remain unchanged.

	•	CTA Capital LLC

	•	Salomon Smith Barney Global Diversified Futures Fund L.P.

	•	Citigroup Emerging CTA Portfolio L.P.

Please acknowledge receipt of this modification by signing one copy of this letter and returning it to the attention of Mr. Daniel McAuliffe at the address above or fax to 212-793-1986. If you have any questions I can be reached at 212-559-5043.

Very truly yours,

CITIGROUP MANAGED FUTURES LLC

By: /s/ Daniel R. McAuliffe, Jr.         

Daniel R. McAuliffe, Jr.
Chief Financial Officer & Director

By: /s/ Stephen Hedgecock                 

Print Name: Stephen Hedgecock                                

DRMcA/sr