He won't stop that young because however when you look at the current age of 2-3 years he can still be productive even though there might be a new adaptation where smaller leagues, smaller clubs or SPL and MLS are always bringing players so he won't stop at that point.
Right now he's trying to rebuild his career due to the situation that happened before and the ban that he received so it's not a risky transfer but it's a turning point where he has to try to rebuild his career and make a splash at a new club so that he's not considered finished.
Marseille is quite ideal for now because we can see this season alone Greenwood, who has indeed become a mockery in England because of the problems he received, was able to be welcomed and regain his current form so it does not rule out the possibility of Pogba doing the same especially since De Zerbi is quite clever when utilising player potential.
I agree, Pogba definitely could have a great situation for the future if he goes to Marseille, and if we can see this getting great for his future as well. Doesn't mean he can't go to Saudi leagues in the future when he is 35 or more he can definitely get to that level and get a ton of money at that point as well.
But until that age, he can definitely make some more plays here that matters and show himself, at Marseille he can play for at least 2 more seasons if not for three seasons and then he could end up with a much better situation. I believe we are going to end up with him accepting any offer from Marseille, and he is going to go there for free as well which is not going to be all that complicated since this is normal situation.
The most important thing for Pogba at the moment is to complete the punishment process until March and find his destination whether to return to Juventus or indeed find a new club in the remaining time because after all he is clearly certain to play regardless of where the club is so he only needs to be able to upgrade himself in the remaining time while preparing to re-adapt to the game he has long left.
Currently there are still a few months left before his ban is completely over and of course he still has to take advantage of the remaining time at least to maintain fitness so that when he returns to playing he is not too far behind although it requires more adaptation of cooperation and chemistry but at least when his fitness is in physical problems supporting then at least it can be a plus for Pogba regardless of where he will continue his career later.