Kylian Mbappe's future worries me. He's gifted. His incredible ball control and quickness set him apart from other footballers his age. PSG may not be the greatest location for him to thrive. He won the World Cup with France but not the UCL Cup. Thats a large gap for a player his caliber. According to my research, he may join Real Madrid. Such an action could be crucial. Spanish giants provide a rich history and top titles. For his reputation, I hope he chooses well.
I think by looking at the current situation with Mbappe renewing the contract but with some rumors saying that he will leave next season because this is part of their 1-season contract deal this actually indicates that Mbappe will leave regardless of anything he will not stay at PSG.
He has good potential for his development especially with his current young age so he has a lot of hope to develop and indeed this will not be able to get in Ligue 1 even if he is at PSG.
There must be a bigger competition than Ligue 1 to make him develop more because even though Ligue 1 is one of the best competitions in Europe but its prestige is still less than La Liga or EPL so indeed Mbappe will not be able to develop further.
Talking about Madrid, the option is still there, it's just that we are now only speculating because for the fact that it happens or not it will only be seen next season whether Madrid will prepare again in the hunt for Mbappe or not because last season Madrid was actually quite passive and just waited it.