Neymar barely played few games in Saudi Pro League and passed most of the time injured. The only thing that might make Al-Hilal gets a profit from it is his name and popularity. Same for PSG, he helped them more with his name rather than the goals he made.
Neymar surprising move to PSG from Barcelona made him fade slowly. He was like a legend there and things started getting worse for him ever since.
I doubt big teams will try to persuade him and he will remain in Santos unless he gets a chance to join Messi in MLS
Neymar had perhaps the best time of his football career during his time at Barcelona. Neymar was really terrible at Barcelona and he was a big threat to any big team with Messi and Suarez but Neymar accepted the offer of more money from PSG and signed with PSG and since then his career has started to go bad. While at PSG, Neymar suffered the highest injury and due to this injury he was sidelined for many seasons and missed many major tournaments. Due to more injuries and not being able to contribute well for the team, PSG could no longer retain him at a high price which led to his sale to the Saudi League.
In the Saudi League, Neymar was sidelined for the entire season due to injury problems and only managed to play a few matches for Al Hilal, although he did not perform well there, which led to him being sold to another club. But it cannot be denied that Neymar is definitely doing well at the club he is at now.