Napoli must be able to make decisions for their own good and also for Osimhen's good if Napoli wants to improve their own team this season. Because when there is a problem within the team, of course the results that the team will get will not be optimal throughout the season because the team still needs to solve the problem so that there are more satisfying results at the end of the season. So there is no other choice but to release Osimhen at a more reasonable price and also buy other players whose prices are also more logical for Napoli itself to accept.
Antonio Conte knows what needs to be done to improve his squad, he really wants Lukaku in his squad and Napoli are trying to sign him. Selling Osimhen would benefit Napoli and Chelsea are desperate for him, Napoli could get Lukaku plus some cash, while Chelsea could ease the burden as Lukaku is not in Enzo Maresca plans. The heavy defeat in the first game made Conte debut with Napoli less than impressive, of course he will try to organize his squad to improve the quality in the next match.
While Conte may know what they need to do, that doesn't change the fact that we are going to see them not make any moves until they can get rid of Osimhen. Because of that deal, they are still waiting and basically they are just using almost the same exact squad but with a manager that is wildly better. I am not saying that we are going to end up with Napoli doing worse, even with similar squad, the manager difference could make it possible for them to get a win, and I think it should be noted that they are going to end up with a good result given enough time.
I mean it's clear that we could make it work one way or another, and I think it's clear that we could see Napoli have some trouble with Osimhen situation for this season. It is not ending, and we are nearly at September, so I think by the looks of it they are going to just keep him and try to sell him next season instead, they do not have enough time to sell any of these people, seems like not a good idea.