Osimhen is still young and still has a contract at Napoli at least until 2026, so even if these teams are not willing to recruit Osimhen at a high price also the reality is that Osimhen will still be fine at Napoli. Moreover, Napoli's new manager Conte is a great manager, and if Osimhen stays at Napoli, it is very likely that Osimhen's quality and performance will improve and be even better under Conte's coaching later. But yes, if for example these elite teams are still very interested in recruiting Osimhen but are not willing to pay dearly, then the solution may be to trade by giving their key players to get Osimhen from Napoli.
Yes, but there's no point in forcing him to stay since he doesn't want to. Furthermore, Napoli has spending needs in other sectors that serve to support an attacker. With the money received from the sale of Victor Osimhen they can buy 2-3 good reinforcement players and have Romero Lukaku.
Not a bad deal!