The news comes as
UEFA president Aleksander Ceferin confirmed the European governing body was looking at ways the rules on multi-club ownership could be adapted.
Paris Saint-Germain are already under Qatari ownership while Ratcliffe owns French side Nice potentially presenting a hurdle for both bidders for United.
“We are not thinking about Manchester United only,” Ceferin said in an interview with Gary Neville on his YouTube channel, The Overlap. “We’ve had five or six owners of clubs who want to buy another club. We have to see what to do. The options are that it stays like that or that we allow them to play in the same competition. I’m not sure yet.
“We have to speak about these regulations and see what to do about it. There is more and more interest in this multi-club ownership. We shouldn’t just say no for the investments for multi-club ownership, but we have to see what kind of rules we set in that case, because the rules have to be strict.
“From one point of view it’s true if you are the owner of two clubs and they play in the same competition you can say to one club to lose because you want the other to win. But for you, as a football player, do you think it’s so easy to do that, to tell a coach, lose the match because the other wants to win?”