It's a good thing that Mbappe is been signed by Real Madrid for five contracts but my area of concentration is where would Ancelotti choose to play Mbappe fully as his wing since Ancelotti likes playing 4-4-2 or 4-3-1-2 formation for Real matches. Let's not forget that there are quality players like Rodrigo, Vinicius, and Bellingham occupying such playing formations at the frontline.
I think that by next season, Ancelotti will introduce another tactical formation of 4-3-3, to bring Mbappe in, in every Real Madrid match of Laliga or Champions League, to avoid issues or confusion that will arise based on how to feature Real Madrid frontline players
If you study Haaland, he has a similar characteristic with Mbape and that's the speed, such people are good at wing but skills wide Mbape is better than Haaland by far and that is going to make him a good striker of only Anceloti is going to use that strategy. Mbape is not only fast, he is strong and doesn't fall often and I read somewhere he stated he is not worried any where, he is going to accept any place that is given to him, he will deliver.
I think the fact that Anceloti and Perez never gave up on his transfer to Real Madrid, they already had sorted out even before for demand, it will be stupid to sign a player when they don't have his purpose at the moment. Come to think of it, Ronaldo his idol started as winger but was later converted to striker and today he is one of the best Real Madrid ever produced, even Mbape wouldn't be a problem, let's wait when the season resume.