I don't think Napoli is that interested in selling Osimhen. If they were, the price wouldn't be so high. They've also noticed that Osimhen's performances have declined. It's not that Osimhen isn't still good, but he can be signed for that amount. The truth is he didn't get as much hype as he did two seasons ago when they won the Serie A league. In fact, I think what really caused the decline in Osimhen's performances is that their team didn't do better last season. Just imagine if they had done better and finished the season in second position in the Serie A competition; the hype would be more than this, and clubs would be much more interested in Osimhen.
Isn't only tied to the performance of his club Napoli, but also tied to his individual performance as well because ,during the African Cup of nation , many fans and supporters believed/expected Osimhen to have done incredibly well in that competition and help Nigeria in lifting the trophy, but he performed way far below expectations and couldn't help Nigeria out in the nation's cup