I don't know why Laurentis chose to put a very big amount on Osimhen or is it that he does not want him to leave Napoli. If the player wants to leave fine, no need of using huge amounts of money to withhold him back. 120 million is way too high for a player that was not in his best form last season in all competitions that he played. Assuming it was when Napoli just won the league when Osimhen was super hot, no doubt PSG or any other clu would love to pay.
Osimen was rumored to be leaving the club earlier this season but those rumors did not come true. Rumors that Osimen could leave his current club and join PSG intensified when Mbappe left the club to join Real Madrid again this season. We often notice that Osimen does not have a good understanding with the current club, so because he is not having a good understanding with the club, he may decide to leave the club and join a new club where he will be respected enough.
If Real Madrid do not complete a deal with Mbappe, there have been rumors that the star could join Real Madrid, but if Osimen changes clubs this season, PSG will be most likely to win.