The Real Madrid squad already has many talented and young midfielders but Real Madrid always looks at young players who are playing well of course the goal is for the long term and also to be able to replace several other senior midfielders in the future, but it's also true that it won't happen there was a big big transfer made by Real Madrid on the other hand Dortmund also didn't want to sell Jude Bellingham who was on fire, now even though many other top European teams are also hunting for this young player I think Dortmund can keep him.
Except Jude Bellingham's desire could be key to leaving unless he wants to stay focused on Dortmund.
Surely this is the best strategy by the Real Madrid as they are bringing young talented players and using their skills which are surely helping them for increasing their quality and giving best results for staying at the top in Spain and Champions League now their next target is already in rumors for few clubs but most chances he will be joined Real Madrid because without any doubt this is the best place for this young kid and his future where he can do his best and trophies are also falling here for good time.
Borussia Dortmund is doing this for many years, and they have never been interested in trophies, just having their own strategy which is helping them for having more funds through selling these quality youngsters to big clubs in Europe.