I agree with you, I think the Saudi Pro League is the best option for Pogba. He can earn a lot of money there and play in an easier league. Also, Europe's elite leagues have many question marks for Pogba. But the Saudi Pro League can hide his flaws. On the other hand, the good scenario holds many hopes for Pogba. But if things don't go well for Pogba in Arabia, his career could suddenly take a turn for the worse. Whatever league he plays in, he should make the most of this opportunity.
If there are no big teams in Europe to make an offer, Pogba is better to move to Saudi teams. Sure, Saudi teams will give a higher salary for Pogba. They also probably guarantees Pogba to be the main player there. Pogba is still in prime age, he deserves to play regularly in the main lineup. Al Nassr and Al Ahli seem to try signing a new top midfielder because they still have lack of top players in their midfield line. Meanwhile Al Hilal and Al Ittihad seems to have enough top players in their midfield line currently. By the way, if Pogba can play well in SPL, he may get another chance to play in France national team anymore.