Oshimen is already very comfortable in Napoli, so it's impossible for him to leave easily. His career at Napoli has been very good, with a salary offer of €5,450,000 annually, which is quite a large value with the facilities that Oshimen got while still contributing to Napoli. Even though Oshimen is still very young and has experience that can be gained, I'm sure he will not miss the comfort that Napoli has given him.
Napoli has been rejecting osimhen's bid from newcastle. Osimhen will not leave from the club. He is here to stay even longer in the club. There's no need to approach him caused by it will become useless. So many clubs have been giving up in getting him.
There's no club that is willing to pay a lot of money only for him. You can get the cheapest striker compared to him easily. It doesn't make sense to rush him and buy his release clause. I can't even imagine how disappointed the club is. His performance in the new club will be very far from our expectation.
Buying osimhen from napoli is a big gamble for the football club, that's why all of clubs seem to give up on getting him rather than wasting money for him.