There are questions over new AS Roma investor Sheikh Adnan Adel Aref al Qaddumi al Shtewi.
Roma are still partly owned by the Unicredit bank as part of the deal that saved the club from bankruptcy under the Sensi family.
"By Monday or at most Tuesday, the Sheikh must prove he has the cash to invest," warned Unicredit Vice-Director General Paolo Fiorentina.
"Without money, it will all disappear. Perhaps this move will have to be dragged out for a little longer. We might be wrong, but we do have some doubts on the consistency of his funds."