Although Jude Bellingham plays as a midfielder for Real Madrid, he plays as a striker for the England national team. Real Madrid have recruited quality players to their club and by far the most talked about players are those who play for Real Madrid. Mbappe joins Real Madrid again If Mbappe doesn't mix well with all the other stars, it could lead to a bad situation in the dressing room as we saw at PSG. Mbappé is an arrogant player he didn't care much about other players when he was at PSG but if he wants to do the same at Real Madrid he won't care because Madrid has a good bond between all the other players. If the manager of Real Madrid can build a good relationship with each player, then the performance on the field will be much better.
Although Bellingham is nominally considered a midfielder, he still plays primarily in attack, and in this case Ancelotti will not be able to count on him in the midfield. By the way, there were rumors that Rabiot could continue his career in Real Madrid, but I see that he postponed the decision on this issue after the end of the Euro. He could very well replace Kroos, who retired. And Mbappe, Vinicius and Bellingham will play up front in any case, they are attacking players and it seems to me that there is no point in trying to place any of them in the midfield line.