I wouldn't advice him to go to Manchester United despite the salary will be higher, the exposure will be there too and he'll be having better competitions in the premier league. Why I wouldn't advice him to switch clubs is as the Turkish league is the perfect league for him to build up his career again and get into form that he can use to negotiate a better payment structure for him at any club that wants to sign him. Him trying to get a new club in January will be desperate of him and the clubs interested will use that as a leverage on him to get a fair payment structure that will suit the club but not Victor Osimhen. He should stay with galatasary until the season ends.
I don't really agree with this view. Osimhen playing in the Turkish Super League was already a big downgrade for him. He was one of the few most important strikers in the world and now his name is forgotten in Europe. He earns much better money here and the club pays his taxes (at least he doesn't pay them himself, it's between the club and the government) but in terms of prestige it's more important for him to be in the Top 5 leagues. Manchester United can get him if they pay 75 million Euro and I don't think he would say no to United. In United's current situation, if he goes there and starts scoring goals, he could even be seen as a savior by the fans.