I think that Kylian Mbappé can have a great career if he joins a good club as Messi and Neymar are not in Europe now. The rising star is likely to join the Real Madrid squad next season. I think it is best for Kylian Mbappe to join Real Madrid.
PSG currently still have the property rights to Mbappe, but with the case of the transfer market maybe Mbappe is not in 100% condition with PSG at the moment. At the moment Mbappe's mind may have been on Madrid. This problem makes Mbappe's game not optimal. I'm sure the problems at the beginning of the season had a bad effect. PSG must prepare without mainstay players and they must be able to adapt immediately. This season the coach has to start giving minutes to other players.
In fact, everyone was predicting this situation at the beginning of the year. So, after Mbappe said he wanted to join the team, keeping him in the team was a risky situation for Psg, which we see now. As a team, they are far from last year's performance. I observe that Mbappe has lost his old enthusiasm. I hope I'm wrong, but things are not going well at PSG. I have doubts that they will even become champions in the league this year.