In recent years the Madrid midfield trio has been very solid, the collaboration of Modric, Kroos and Casemiro has succeeded in bringing Madrid to glory in the domestic league and European stage. Now Casemiro has been sold by Man United, Modric and Kroos are almost entering retirement age. Madrid needs to form another trio that can put pressure on the opposing team, a good midfielder needs to be brought in to compete with Barcelona for the La Liga title.
Modric, Kroos and Casemiro are perfect for their midfield but they already prepared to replace those players with Tchouameni, Camavinga and Valverde. Valverde has a really good season so far. Tchouameni had a very good World Cup 2022 and Camavinga, in the past season shown that he can replace Toni Kroos.
In my opinion, Tchouameni replaces Casemiro, Camavinga replaces Kroos and Valverde is an alternative for Modric. They are very young and so talented midfielders.
Different conditions occur in Barcelona, Xavi has found a talented midfielder. De Jong, Pedri and Gavi allowed Xavi to breathe a sigh of relief, they were still young and able to play well under Xavi's tutelage.
If you compare De Jong, Pedri and Gavi to three midfielders of Real Madrid, Tchouameni, Camavinga and Valverde, honestly they are not different in quality. De Jong is no longer young and he joined Barcelona many seasons ago. Pedri and Gavi made more noise than Real Madrid midfielders but I don't think they are actually better.