There are still a lot of games to go this season and Osimhen will also have his days. He is now ranked second in the goal scorer list and nothing speaks against him making up for those 4 goals in game day for Lautaro Martinez. He will still be among the top scorers this season as well, but of course during a season when Napoli becomes the title winner and also plays so outstandingly, it also influences his value. But Napoli will probably still something around 100m when Osimhen keeps scoring like that, since he is still a young striker who has many years to go. If a club is looking for a player with his career still ahead of him, Osimhen is a good choice.
Napoli should understand they need to have a better relationship with players like Osimhen. Because if you compare the situation of Napoli without Osimhen you can understand they usually can't have a good performance without of this player. The drama that happened to this player about the TikTok account of Napoli made Osimhen have a bad relationship with his team and there was even some news about this player leaving Napoli before his contract ended.
Sorry I think you are in the wrong place when you think that romantic has a place in the football business. Do you believe that Mbappe is still in Paris because they have a good relationship with each other? Do you think that Ronaldo is in Saudi Arabia because the relationship with the Saudi Arabians is so amazing?
This is all about the money, absolutely all. There is not a single thing in this business that is not about the money. If a different club comes around and offers him double the salary and either his contract expires or the transfer fee will be paid, Osimhen will say goodbye even if the Napoli management and him would be best friends for life. That would sadly not count a single bit.
That is why it is so ridiculous when players say how much they love the fans and the club. It's shameful sometimes when they say it and are gone two weeks later.