Liverpool is a great team and for me the best of all Premier League regarding the way they conduct their game play,they attack really fast,completely different from Manchester City but this has also big risks back and that is why Liverpool defense conceded so many goals this past season.However a player of Mbappe caliber would be more interested to play for a team that have won the Champions League trophy more than any other team as he has already achieved a lot of titles at Paris in league 1,most likely Liverpool won't go as far as Real Madrid in Champions League and that is why I think he will choose Madrid but if he doesn't and comes to Liverpool that is the biggest hit for the Premier League upcoming season.
If one claim to be good and a god of football, they will not take the short way to success I believe. In the space of 4 years back, Liverpool has won the Champions League and they reached the final last year against Real Madrid, they played like it was their final moment in football but Real Madrid won by a goal, I don't see any reason why he will prefer Real Madrid over Liverpool. If Haaland and De Bruyne all have this mentality when they came to Premier League, they wouldn't have the rating they had this year because people would believe that such a club is used to winning it and it is not a big deal. If you say Mbape is going to Real Madrid because of money, then I will say aye!