This is not the first time Real Madrid has brought in a world star, so don't overestimate Mbappe. Real Madrid's big name remains much bigger to be respected than the player's name. However, I admit that Mbappe's arrival will improve Madrid's game much more and he will have to throw away his ego like when he was at PSG. Carlo Ancelotti is a senior money coach who has great experience, he will definitely really appreciate every player but he will never treat a player specially.
In 1998-2000 the start of the era known as Galacticos built by Florentino Perez. A series of names of great players like Figo, Zidane, Roberto Carlos made Real Madrid one of the greatest teams of all time. Continuing with the Cristiano Ronaldo era imported from Manchester United.
It is true that the big name of the club is high from a player so that it does not need to be exaggerated.
Mbappe is only a prospective big player because he could have drowned even though he was famous as a great player since starting his career professionally.
It all depends on him in every trust given to him at Real Madrid by the coach. There is no great player who has been immersed when it is in Real Madrid uniform like Owen.