No, Real would definitely not buy Pogba after those doping scandals and after such a long break without playing. But it seems that Monaco is ready to take the risk, although I think this still does not guarantee that Pogba will immediately play in the starting lineup. It is possible that he will start on the bench and sometimes get a place coming on as a substitute. But for Pogba, this is still a very good move. He will immediately play in the Champions League, and if he trains properly, he has a good chance to become a regular starter for Monaco.
FIFA banned Pogba for 4 years. But Pogba was released before the end of 4 years. He is definitely lucky. But now no big club will want to add Pogba to their squad. Firstly, Pogba's record is not good. There is no guarantee that he will not do such a thing again in the future. Secondly, there is no guarantee that Pogba will be able to play well after such a long break. There is a big chance that Pogba will not be able to play well.
But now a team like Monaco is suitable for Pogba. Ligue 1 is relatively less competitive. Monaco squad is also quite good. Here Pogba can try to improve his skills. If he works hard, then in the next few seasons, maybe a renowned club in Europe will be interested in buying Pogba.