As far as I understand, it seems that Real Madrid's goal to have Tchouameni is to prepare for regeneration, as we all know that Modric is already 36 years old, and regeneration will be needed in the future. With Tchouameni still very young, this will be a very mature preparation for Real Madrid. FYI, not only Real Madrid, even PSG and Liverpool want this player to play at their club next season.
The good move from Anceloti, I am waiting for that. I'm actually worried if they're going to have the wrong strategy in regenerating. I am afraid that they are like Barcelona. They slumped when the players were away plus they didn't have much money to shop for players. This has made them this season very bad even after Xavi came they improved. The preparation from now on is a good decision, because maybe they are still wearing Modric for another year.