Real Madrid won today and didn't lose their position at least. We saw Endrick entering the game but not Arda Güler. I believe he has made a big mistake by not leaving Real Madrid in January.
Arder Güler possesses great talent and consistent minutes on the pitch is critical for his growth and development. I still wonder why Arder Güler didn't leave Madrid on loan during the previous transfer window to get more playing time. While playing for Real Madrid is a dream for many players, the priority of a young player should be regular game time instead of sitting on the bench.
I think because Ancelotti held him back, the reason why Arda Guler is still holding on and not asking the club to release him. There is no doubt that the Turkish player does have above average talent, but so far because Ancelotti still has better options, Arda Guler still has to be patient and enjoy the process. Joining another club as a loan player in order to play regularly is certainly the right step, and it seems that Arda Guler will do it next season. Being a reserve player for a long period of time will not make his talent develop, I think there is nothing wrong if Arda Guler tries his luck by moving to a Serie A or Premier League club as a loan player.
I think Ancelotti has no interest in loaning Arda Guler this season because he was in a situation where many of his players were injured, and maybe he thinks that could happen again at any time. So if that happens when Guler is loaned to another team, then Ancelotti will definitely regret it. It may seem unfair, but that's how it is for a young player to play for such a big team. If he is indeed in good form, I don't think Ancelotti has any reason to keep him on the bench, so the deciding factor is still relying on his own intentions and efforts.
With so many players recovering from injury, it not only gives Ancelotti plenty of options but also gives him a headache because he has to choose and also has to bench a lot of people. It wasn't just Arda Guler who didn't play, even Valverde's class, even someone like Valverde also did not get the chance to enter the field.