A U.S. regulator has extended a deadline to bid on Guaranty Financial Group assets to Tuesday, while bids for another troubled, lender Corus Bankshares Inc, are due Sept. 3, sources familiar with the situation said on Monday.

Potential bidders for Guaranty, the second-largest publicly traded bank in Texas, include at least one private equity consortium, including Blackstone Group, Carlyle Group, Oak Hill Capital, TPG and financial services executive Gerald Ford, sources said.

Chicago-based Corus, which had assets of about $7.1 billion as of June 30, has been battered by losses on condominium loans.

The Federal Deposit Insurance Corp (FDIC), which is handling the sales, declined to comment. The sources are anonymous because the talks are private.

(Reporting by Paritosh Bansal and Megan Davies. Editing by Robert MacMillan)