The Ricketts family, who own Major League Baseball team the Chicago Cubs, have submitted their offer to buy Chelsea.
The bid, which is backed by billionaire hedge fund entrepreneur Ken Griffin, was submitted before the 21:00 GMT deadline on Friday.
British property investor and Chelsea fan Nick Candy will also submit a bid.
On Friday, he said he had secured additional investment from South Korea to his Blue Football Consortium.
Roman Abramovich's attempt to sell the club was halted after he was sanctioned by the UK government and his assets, including Chelsea, were frozen.