It sucks that any club owns him. PSG was indeed wise to sell him to Al Hilal quickly. In addition to paying a fee of 90 million euros for PSG, Al Hilal also offered a massive salary of 260 million euros for a two-year contract with him. Not a small amount. Neymar hasn't trained yet, and I see no reason for him to focus on Brazil. Al Hilal will feel unhappy about this. Although he is recovering from his injury, no one has said he will not be injured again if the damage continues. Then, most likely, the situation will get worse. The worst thing is not being able to play anymore.
He will not go to the Brazilian national team, because he is now in rehab after an injury, and it would be stupid if he should miss the first few matches for Al-Hilal but go to play games for the national team. In addition, he will need some time to adapt in a new country and in a new championship, so he don't needs extra flights now. No one is safe from injuries, but Neymar is still a relatively young player, so he should recover quickly, especially since the injury is not serious.