Citigroup said that it appointed three new directors and installed a new chief to oversee its retail banking unit, addressing criticism that it lacks enough leaders with commercial banking experience.

Federal regulators have been pressuring chief executive Vikram Pandit and chairman Richard Parsons to overhaul management and improve performance after a series of federal bailouts, including $45 billion of taxpayer money, following massive loan losses and write-downs.

The changes come as the government prepares to take a 34 percent equity stake next week in New York-based Citigroup, the third-largest US bank by assets.

In another development, the Wall Street Journal reported that a top Citigroup trader, Andrew Hall, is pressing the company to honor a 2009 pay package that could total $100 million. The Journal said this could lead to a showdown between Citigroup and the US government's new pay czar.

Hall heads Citigroup's energy-trading unit, Phibro, which occasionally accounts for a disproportionate amount of Citigroup income, the Journal reported.

Citigroup's new directors include Diana Taylor, 54, the former New York banking superintendent who is now a managing director of fund manager Wolfensohn Capital Partners.

The others are Timothy Collins, 52, chief executive of private equity firm Ripplewood Holdings, and Robert Joss, 68, the dean of Stanford University's business school and a former Wells Fargo & Company vice chairman.

Citigroup's board now has 17 members, seven of whom joined this year. "Citigroup's board has been a part of the bank's failed strategy for a long time," said Sydney Finkelstein, a professor at Dartmouth College's Tuck School of Business.

"The government has been exerting the same sort of pressure at General Motors and Bank of America. It appears to be doing a better job at corporate governance than the bank did on its own."

Finkelstein added that the new directors "will not be beholden to Pandit and Parsons, and I expect them to take a much more critical, and even realistic, view of Citigroup's future, and Pandit's role in it."

Citigroup also said Jerry Grundhofer, who joined its board in April, would become nonexecutive chairman of Citibank NA, its retail banking unit. He will work with Eugene McQuade, the unit's new chief executive.

William Rhodes, who had held both titles, said earlier this month that he would step down. Many analysts consider Grundhofer, a former chief executive of US Bancorp, a candidate to run all of Citigroup should Pandit step down or be removed.

Citigroup, Pandit, Parsons and the various appointees were not available for further comment. Joss resigned on Thursday from Wells Fargo's board, avoiding a potential conflict of interest from continuing to serve.

Governance changes

The most prominent of the new board appointees is Taylor, the companion of New York City Mayor Michael Bloomberg.

Taylor was once considered a top candidate to run the Federal Deposit Insurance Corp. That job instead went to Sheila Bair, who has become a prominent critic of Citigroup's business practices and governance.

Parsons said in a statement that each of the new directors "brings deep and valuable experience in various dimensions of financial services." Parsons has pledged to install a majority of new independent directors on Citigroup's board.

The bank also announced other governance changes. Among these, Grundhofer will chair the board's audit and risk management committee. He replaces John Deutch, a professor at the Massachusetts Institute of Technology who in April got just 72 percent of votes favoring his reelection to the board.

Citigroup also named a board oversight committee for Citi Holdings, which has toxic assets and several businesses that the bank wants to shed.

Michael O'Neill, who became a director in April and is a former Bank of H