Ancelotti is the luckiest manager in the world, because he has the ideal squad to win trophies in every competition they participate in. Mbappe presence in the front line makes Madrid increasingly feared by any team, and Ancelotti will most likely experiment to find the right formation for Mbappe. If you look at Mbappe individual abilities, Ancelotti actually won't be too bothered about determining Mbappe's position in his starting XI. Ancelotti could also choose to field three strikers with Vinicius, Mbappe, Rodrygo, and place Bellingham behind them.
The departure of Kroos, who decided to retire, and Nacho, who left for Saudi, were other challenges that Ancelotti had to overcome. There is no doubt about Madrid front line, especially after Mabppe arrival, but the roles left by the two veteran players must be handled well to create balance in the team. Meanwhile, Ancelotti certainly has no shortage of options in his midfield and back line, he can even conjure up Tchouameni to do the job.
All the best coaches in the world certainly want to coach a team as big as Madrid today, because with a squad full of star players at least it will be a guarantee for the coach to be able to continue to win the championship trophy, but coaching a big team full of star squads is not an easy thing to grasp many factors that are likely to trigger the failure of the coach in coaching a big team, Ancelotti has had a lot of experience in coaching big teams so far and currently is his second period in coaching Madrid, so he really understands what he has to do to handle the line-up or starting XL will be set next season, although currently their attacking line is full of star players but I think Ancelotti will be able to handle it well and keep their squad conducive.
The departure of Kroos does not seem to be the main problem for Madrid at the moment considering that they have several young players who have experienced enough to cover the void in the midfield, besides that isn't Bellingham a player who is actually in the midfield position?
So I think maybe Ancelotti will try to optimise Bellingham performance in their midfield position next season, so that Mbappe can also get a place in Madrid's attack, the arrival of Mbappe and the departure of Kross, it seems that it only needs a position adjustment for the players from Ancelotti at the moment, because after all they have a versatile player like Bellingham and it makes it easier for Ancelotti to determine their main players.