But to mean the bigger question is that, is he actually willing to go to Chelsea or Manchester United?
Even both Chelsea and Manchester United afford to buy out Osimhen, but they need to pay his high salary too, so this is why I say PSG is more realistic. PSG can buy out him and able to pay high salary.
It just depend on Osimhen decision, will he want to play for career or play for money.
Arsenal in the meantime will be keen on signing Barcelona's duo Raphinha and Ferran Torres. Barca are in need of financial support and wouldn't hesitate to sell off these and some of its players to aid its financial problems.
If they get to sign these players, I have strong doubt about Mbappe being signed to the gunners camp.
I don't think there's any chance of that happening at all and there are probably already agreements in place, whatever happens like last time when Mbappe changed his mind at the last minute. Regarding Barcelona, I think they will not give away the players they need, otherwise by that logic you can sell the whole squad and close the club to pay off debts