Ex-Leeds chairman Gerald Krasner told BBC Five Live the interested parties he is aware of are "domestic based but the money may well come from abroad".
Potential buyers have until 1700 BST on Monday to submit an offer for the club.
Pearson left his position at Hull in June after selling the club to a consortium fronted by Paul Duffen for £10m.
The former Leeds commercial director insisted in the same month that he was not considering making a move to buy the club and said: "To be honest, I think we can put this to bed.
"But, as for the long term, I certainly wouldn't rule out going into another club. It's an industry I really enjoy."
But he is now expected to make a formal approach along with Internet guru Peter Wilkinson.
Krasner added: I have been speaking to a number of people over the past few months.
"One of the conversations was about two of the consortiums joining together to make one super offer. I think if they were to team up they would stand a good chance of getting the club."
Those who have previously declared an interest in buying the club include Duncan Revie, son of former Leeds manager Don, and property entrepreneur Simon Morris.
Earlier this week, businessman Simon Franks said he was ready to buy Leeds United, through his Redbus investment vehicle.
Leeds have debts of £35m, including the money owed to HMRC in unpaid taxes.
Bates had proposed to take Leeds out of administration, repaying creditors eight pence in every pound that it owed.