Mbappe has said that his dream team since childhood was Real Madrid, so I don't wonder if one-day Mbappe will finally play in Madrid, even though it's only a few years. madrid still opens the door wide for mbappe, apart from that if PSG manages to win the UCL cup, I also still believe that mbappe will not intend to be at PSG much longer.
I don't see that for now, the reason Madrid were so sure last season Mbappe would come is because things like this happened but when he decided to stay with PSG and turned down Madrid's offers I think it ended there. Because I'm still pretty sure Madrid still won't open the door for Mbappe this season or even next season even though it's possible this will definitely be the last option for Perez, he has money and there are still a number of strikers he can bring in even though it's true in terms of skills obviously it won't be as good as Mbappe but he will choose that option as it will be very painful again for Perez if he is rejected again and again at the last moment.
Kylian Mbappe will not join Real Madrid this season. He will play until he finishes his argument at PSG. He could potentially join Real Madrid later on if they want to sign Kylian Mbappe. However, if Mbappe joins Real Madrid, this team is the best team in the world. That means it has the potential to become the best club.
Even though Real Madrid has been disappointed by Mbappe but with Mbappe's great playing style, of course Real Madrid as a professional club will still be willing to accept Mbappe. But indeed, if Mbappe stays longer at PSG then Mbappe will reach old age, and if Mbappe is too old then this will not make Real Madrid sign him.
Because so far I think Real Madrid only signed players who still have a good long term but yes, after all Mbappe is still very young at this time.
At least this age factor still creates a big chance for Mbappe to play for Real Madrid later and after all, if PSG still can't win the Champions League title this season and also next season. So of course Mbappe will be very likely to leave PSG, I personally am quite sure because of Mbappe's young age, at least Mbappe will not play at PSG forever.
Unless Mbappe has great loyalty to the team, and with great love for the team then of course Mbappe will be able to play at PSG until retirement. But with the big ambitions that Mbappe has, then of course Mbappe will play in a team that does have greater potential to be able to win many titles, especially for the Champions League.