I wouldn't be surprised at all if Kylian Mbappe extends his contract with PSG again. And that's what we've seen in the last few seasons as well. But if Kylian Mbappe wants to win the Champions League or the Ballon d'Or, he will definitely have to leave PSG. Because while PSG has plenty of money, they have repeatedly failed to build a stable squad. And so Liverpool or Real Madrid would be good choices for Kylian Mbappe. Liverpool will be stronger if Kylian Mbappe joins Liverpool. And Liverpool's chances of winning the Premier League will also increase.
PSG are holding on Kylian Mbappe simply because they see a promising future with the players, Mbappe is currently with the club because he's earning massively, although he clears out his mind and wants to exits Parc des Princes. Kylian Mbappe is an outstanding player at PSG, having won the club's most important title, but the Frenchman still yearns for the Ballon d'Or, which he can't win and his chances are slim; he needs to win the UEFA Champions League if he wants to be nominated in the top three positions. I believe it is past time for him to leave the club and pursue a further comprehensible elite team in La Liga to play for; Real Madrid would fit him well, and the club has always included him on their radar.