It seems obvious to me that he is unlikely to decide to move to Saudi Arabia, given that it was his decision to leave the club, which means that the decision to move belongs to him and the club should not interfere with it, so Napoli's agreement with a Saudi Arabian club makes no sense. The English Premier League is where he can fully realise himself and improve his skills, among all possible clubs, Chelsea looks the most suitable for him
In the latest tweet from fabrizio where Chelsea did not reach an agreement with napoli, so there is no hope for chelsea fans to see osimhen as part of chelsea this season. Chelsea about Osimhen is over and now only the team from the Saudi Arabian league is able to provide all osimhen's wishes, both about salary. Apart from that, Al Ahli has also got Toney and it is likely that they will not pursue osimhen again.
And it is likely that Osimhen will remain with napoli and he will rejoin the squad if there is no positive result from the meeting between chelsea and napoli. I am more sure that osimhen will remain with napoli because napoli fans really hope he does not leave in this transfer window.