Citigroup CEO Vikram Pandit has been on the job for just over a year but talk of his ouster is already rumbling around Wall Street. Citi’s board says it backs Pandit, and with no obvious successor in sight, they may continue to stand up for the chief for some time.

If dismantling the “financial supermarket” of Sandy Weill proves to be a watershed event leading to a management reorganization, those wagging fingers at the CEO should take a look at the wealth of corporate experience surrounding him in the boardroom when considering who may have been asleep at the wheel.

Here is a handful of Citigroup directors with particularly prominent experience at other U.S. companies. The “joined board” dates reflect when they joined the board of Citi or a predecessor. Pandit became CEO on Dec. 11, 2007.

C. Michael Armstrong
Former chairman and CEO, AT&T Corp
Former chairman, Comcast Corp
Joined board: 1989

Alain Belda
Chairman and former CEO, Alcoa Inc
Joined board: 1997

Kenneth Derr
Former chairman and CEO, Chevron Corp
Joined board: 1987

Andrew Liveris
Chairman and CEO, Dow Chemical Co
Joined board: 2005

Anne Mulcahy
Chairman and CEO, Xerox Corp
Joined board: 2004

Richard Parsons
Former chairman and CEO, Time Warner Inc
Joined board: 1996

Robert Rubin
Former co-chairman, Goldman Sachs & Co
Former U.S. Treasury Secretary
Joined board: 1999

Reporting by John Stempel

(Photo: Flags fly outside the Citigroup headquarters in New York, November 24, 2008. REUTERS/Brendan McDermid )