Real Madrid's coach is managing the players well. If Vinicius and Mbapp get injured, then Arda will play a lot as a starter. Also, if Rodrygo gets injured, it opens up space for Arda to play more. The young player who is in the worst situation is not Arda, but Endrick, who has not even played at least 5 minutes in most games. Arda will have a place as a starter soon, but in Endrick's case, I doubt very much that he will have a place at Real Madrid. In my opinion, Endrick should accept being loaned to a Premier League team.
In my opinion, Real Madrid needs to keep Arda Guler for urgent substitute because he is talented player. In the future he will be one of the best striker in the world. Therefore it will be good for Carlos Angelotti to keep him as a second options. Many players of Real Madrid have already joined the injuries list, the absence of key players can impact the performance of Angelotti team. So Arda Guler should not be kicked out from the Real Madrid squad. Arda Guler can be very beneficial for Real Madrid in the role of substitute player. This far far Edrick is also a very good player but I think he will not get much time to play because Real Madrid has many spare players who can contribute much better than Edrick.