Osimhen's motivation seems to have diminished. He played great last year and every team was trying to get him, but this year he has had a lower form chart. The transfer fee will thus be lower. We know PSG and Chelsea want him. I believe that if he goes to one of these two teams, he will be more successful than Napoli.
Yeah I understand your point and that's true because I actually noticed some sorts of decline in Osimhen's performance too because there was a huge difference between his performance last season and this season but however that's one thing about football a player sometimes is not actually favourable in performance in some season, so I just believe that this season was not too good for Osimhen but however a player with his capacity will always identify the areas that's giving him issues so that he will be able to improve from the next season.
However if he joined Chelsea or PSG it will actually enhance his performance the more but I think PSG has more to offer than Chelsea even in terms of having more good quality players PSG is more than them and actually what Osimhen need is a club that would support and assist his performance, though I'm not saying that Chelsea doesn't have good performance but they are still struggling a bit so I believe he will do more good if he joins PSG.
I don't see anything extraordinary about Osimhen, he is just a seasonal sticker that is inconsistent with his appearance. Most people only judge him when he was able to deliver the Scudetto title last season. I'm pretty sure that even if he moved to another club then he wouldn't be able to shine either. Can we see now if there are any teams that are desperate to chase his signature? of course not. Napoli should have sold him last season when the price was still quite fantastic.