Neymar is often injured, if you read his injury history while at PSG, it can be concluded that his performance is almost balanced with the time off due to injury. In terms of skill, no one doubts this Brazilian National Team player, but Neymar was unable to make a maximum contribution throughout the season. I think this was also a factor for Luis Enrique no longer keeping him from leaving PSG, the club had to bear a huge salary burden, but didn't get what it needed to the fullest.
Al Hilal is proof that Neymar, who is paid handsomely, cannot make any contribution. Reportedly Neymar injury until December, doesn't this take half a season. But Al Hilal doesn't care about that I think, what is important for them at the moment is the big names of the players.
Yes, unfortunately Neymar injury make his career not good at PSG. I heard in local media he will be available in September, but if you are saying is true he will be available in December that is very bad. Although maybe Al Hilal doesn't mind his injury but Al Hilal really needs the services of a striker at least to race for the title, it would be very disappointing if he only played half a season.