I would say this is obviously good news for the Napoli fans who will still be able to see their best player in the squad perform for some time yet, on the financial side I think Osimhen's valuation is over the top and therefore many top European clubs they could afford to buy his price tag they don't put the money De Laurentis asks for on the counter! at least that some Saudi pro League team doesn't show up who apparently have a lot of money to throw away and don't know what to do with it! however, it would be the football end of Osimhen in my opinion
It doesn't really matter to other teams, if we are talking about a situation where we get to see him leaving for free eventually if they do not end up selling him. Think about it, if Real offers you a lot of money, why wouldn't you do something better? I feel like there is a big chance he would just leave in that case and not sign a contract back again. I do not know when his contract ends, but if they do not sell him by that point then he is going to be leaving for free.
Plus, if they are really asking 180 million, which we all know is overvalued, then if they end up keeping him and he doesn't have a good season this year, which he may, then we are going to seeing them not even get what they could have gotten this season as well.