Yea, initially I heard that Kvaratshkelia will be leaving Napoli but he later changed his mind that he wants to still stay in Napoli to help the club with his own contributions to see how Napoli will become successful next season which was a good decision.
If Osimhen stays in Napoli and Lukaku is brought into the club, it will stable the performance of the front liners but I don't think that Osimhen will be happy staying in Napoli because his mind might no longer be with Napoli. He just need to accept things they way they play out.
I really don't think that Victor Osimhen will stay at Napoli, of all the possible hypotheses this is certainly the least likely.
I would tell you it would be nice, but this is absolutely unlikely. Unfortunately, a player of this quality is good for the entire championship. Patience.