I think people keep making mistakes about Osimhen and his performance in the recent years. Osimhen had a good performance when Spalletti was working there as a coach and this made people think Osimhen was a great player while one reason for Osimhen to have better performance was the strategy of Spalletti and it was not because of Osimhen himself.
I understand your point but one thing we must understand in football is that no matter the kind of pattern a coach will introduce on a club if the player does not have a good performance there is no way he would perform well because there are so many other clubs that has a very good coach but still some of there players are still messing up, so actually in the aspect of Osimhen I don't think he is a weak player because we cannot easily forget how hard he has tried for Napoli in terms of putting his possible best to enforce there attacking speed, don't get me wrong I'm not saying that Osimhen is the best player for Napoli but what I'm just saying is that he has contributed a lot towards improving the performance of the club.
Although there is no doubt that Osimhen performance is no longer the same as before because there has been a serious decline on his performance lately, so actually who knows if his performance will improve immediately he changed club or league because I still believe that with time he will come back to the way he normally use to play.