But Barclays' president, Bob Diamond, dismissed speculation that a counterbid is in the cards.
The four most senior, led by Bob Diamond, the chief executive, are waiving their bonuses.
Barclays ended down 0.6% as former Chief Executive Bob Diamond testified before the Treasury Select Committee.
It recently paid record fines and its CEO, Bob Diamond, was fired in disgrace.
FORBES: About The Alleged LIBOR "Scandal", Back Away From The Cliff
The scandal sparked the resignations of three Barclays senior board members, including ex-chief executive Bob Diamond.
These are questions on which the future of Bob Diamond and the rest of Barclays board hangs.
It was meant to be Bob Diamond in the dock but the MPs cross-examining him were also on trial.
"I really don't think that can be done by Bob Diamond, " he said.
The Libor scandal led to the resignation of Barclays' previous chief executive, Bob Diamond, and chairman Marcus Agius in July.
BBC: Barclays and RBS disclose number of staff paid ?1m-plus
Antony Jenkins told the parliamentary committee on banking standards that he was "shredding" the legacy left by his predecessor Bob Diamond.
Last week, Chief Executive Bob Diamond and Finance Director Chris Lucas agreed to cut bonuses until the bank improves its profitability.
Its chairman Marcus Agius and CEO Bob Diamond stepped down as a result but not before stirring up some heavy drama.
FORBES: Barclays' Libor Scandal Heats Up As Paul Tucker Tells His Side Of The Story
And Bill Winters, the former JP Morgan banker, is the front-runner to succeed Bob Diamond as chief executive of the bank.
They don't come in for the criticism that the likes of Bob Diamond (chief executive of Barclays Bank) comes in for.
The scandal led to the departure of the bank's chief executive Bob Diamond, who was then replaced in August by Antony Jenkins.
And finally, The City of London sings a song for Bob Diamond.
Mr Jenkins replaced Bob Diamond who quit over Barclays' role in rigging the Libor rate used in trillions of pounds of financial contracts.
The evidence for it is a note, made at the time, by Bob Diamond, the banker formerly known as the chief executive of Barclays.
It came after the presiding judge refused to grant anonymity to 104 of the bank's employees, including former heads Bob Diamond and John Varley.
Barclays chief executive Bob Diamond has resigned a week after the bank was fined a record amount for trying to manipulate inter-bank lending rates.
But there was a little bit of respite in what has become almost the national sport of bashing Bob Diamond, the chief executive of Barclays.
Mr Bailey agreed that meant Bob Diamond, who recently resigned as chief executive of Barclays, was not taking sufficient steps to clean up the bank.
Chief executive Bob Diamond resigned in the wake of the affair.
Former Barclays boss Bob Diamond has been questioned by MPs.
These senior people have now been named by the BBC's business editor Robert Peston: Paul Tucker at the Bank of England, and Bob Diamond at Barclays.
Meanwhile Barclays' chief executive Bob Diamond said in a letter to staff that he would "get to the bottom" of what happened and resolve it.
Bob Diamond appeared before the Treasury Committee on 11 January 2011 as part of a hearing into competition in the banking sector following the financial crisis.
Ed Miliband significantly hardened his position in the past few days - calling for Barclays Chief Executive Bob Diamond to quit and calling for an inquiry.
Bob Diamond, the former head of Barclays bank, was "reluctant" to agree that pay at the bank was too high, according to its former head of compensation.
The current chief executive of Barclays, Bob Diamond, was also in charge of the unit where the manipulations occurred, and is now facing calls for his resignation.
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