No one signed him from top 5 leagues even though his minimum buyout clause was 75 million, only Arab clubs showed interest. Galatasaray signed him with money that came from dubious sources. If he were truly worth 75 million, European clubs wouldn't have let him slip away. The news emerging now is just typical media hype. No one is going to step forward and offer him 75 million again. He's already made the transfer of his career. It also seems unlikely he'll return to one of the top 5 leagues from this point on.
Premier League easily signing mediocre players with the fees transfer 100 million euro and I don't think not close chance Osimhen will sign by the premier league team, I know Galatasaray won't sell him if under 75 million euro regarding the current contract remaining but several top teams interested to sign him won't pay more.
Now many media hype informing about the future of Osimhen but the player not announce yet about his interested to leave Galatasaray, I think his focus right now for winning domestic league before talking about his future speculation will stay or leave Galatasaray after playing two season. I would like to see Osimhen keep playing for Galatasaray until his contract expiring June 2029, he has three season left and its still long time to see him keep playing for Turkish Super League match.