Such news and information are purely speculations.
Victor Oshime goes nowhere, he'll stay with Napoli this season despite the links to Ac Milan. That can never be possible after all the strong relationship built with the people of naples. Osimhen wouldn't want to repay them that way. The quest for a central attacking player is important even Paris Saint Germany lacks one currently. Osimhen is currently hot cake in the market everyone wants him.
While it is true that player departures and expected transfers will provide issues for Napoli this season it is necessary to take into account the inherent unpredictability of transfer rumours. Since Victor Osimhen contract with Napoli is still in effect and there are no trustworthy sources to back up this rumour the report that he will be joining AC Milan looks dubious. It is important to wait to draw judgements until there are formal announcements. To maintain a competitive position in Italian League Napoli can still bolster their team with potential acquisitions and rely on their strong custodian and defenders. Even if the season may be challenging they have a chance to claim a high spot if not the first then at least the second.
My Prediction for who wins the Seria A next would be amongst, Roma, Juventus and also Ac Milan.
Napoli would narrowly jump into the top four clubs, I doubt all of those positivity to win the League nor defending the league. They already lost the shepherd, now who leads the sheep's? Next season, player's like Khivicha Kvaratskhelia and Victor Oshime would definitely leave Napoli but not ending up with another Italian side.
And what a ride is it for Buffon. Long range ball serving are closing not important but most importantly, youngins can look at his leadership role and passion also for the game to add to them game. Godspeed with whatever he does ahead.