After Osimhen refused to move to Saudi Arabia, the interest in him has increased significantly. In addition to Chelsea and Manchester United, Galatasaray are also very interested in keeping him in the team. Galatasaray’s vice president, Ibrahim Hatipoglu, said they are very optimistic about keeping Osimhen at the club. In fact, Osimhen has a release clause of €75 million, which is quite a big amount. I’m not sure if any European club will be willing to pay it. Maybe he’ll just extend his loan deal for another year.
Osimhen's contract ends in the summer of 2026, so no one will pay 75 million for one year, situations like what happened when Bayern bought Kane or Barcelona Lewandowski (both had to play out another year of their contract) do not happen that often. And as I already wrote, it seems to me that Osimhen is simply trying to upset Napoli - he wants to get his entire salary (most of which is paid by Napoli even when he is on loan) and leave for free.