Real Madrid was truly devastated by what happened to its two mainstays. Courtois has found a suitable replacement, namely Kepa Arrizabalaga, while a replacement for Vinicius has not been found. Mbappe is indeed the most suitable for that position but for this season I don't think it will be possible because he is still under contract with PSG.
Those who are still under contract with other teams do not need to be seen as options for Real Madrid, who this season are in need of a replacement for that position, because Ancelotti only needs to look at clearer options from the squad he currently has. Because this position is a very crucial position for Real Madrid this season, especially considering that Real Madrid is still very short of attacking players and coupled with the increase in injured players such as Vinicius, there are already six injured players at the start of this season for Real Madrid.
Real Madrid can actually think the players of other clubs as options.
But there are obviously options which Real Madrid can look to buy.
Obviously, they are not options which Real Madrid can play in the next match.
Real Madrid has always been a team that gets the replacement player ready before selling a player that they already have.
But this season it has been a little different for them.
To cover this shortcoming, I think Ancelotti will slightly change his scheme by establishing several other alternatives. Admittedly at this time Ancelotti does not have many options to rotate players for the attacking side but he will be forced to maximize the potential that exists in the likes of Brahim Diaz to fill that void. However, what might be a bit of a relief for Ancelotti is that Bellingham is really very reliable and his role is extraordinary, if his position doesn't change because there might be a change in scheme then I'm sure Real Madrid won't have any significant problems even if Vinicius leaves.
If Ancelotti needs to think about a new scheme for placing players who can still be used in the near future, this needs to be thought through more carefully because changing the scheme might not be more effective for Real Madrid. Because the players have to be in a position that may not normally affect the strength and appearance of Real Madrid itself.
Maybe,
While it is always better to have players who can play in different positions,
at the same time transitioning players to a different position is probably not the best idea for any team to be honest.