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
For a hot blooded young player like Victor osinimi, it is likely that his football career will build more on the European football league side much more than it will in the Saudi Arabia league, so the young player knows what is best for his football career at this moment in time and that is why he taken the decision to go to club that could help his career more, although Saudi Arabia league is a center of attraction right now, but it still not the favourite of younger footballers.
It was very easy for Christiano Ronaldo to move to the Saudi club's side because he was already at the end of his football career and having long years of European experience.