We know that Arda Güler complains that he doesn't get enough minutes. Especially in the Turkish press, there is a lot of news about this issue. I think he will leave Real Madrid at the end of the season.
Arda Guler is a talented player and he has high potential, but in Real Madrid, his competition is quite tough, Vini JR, Rodrygo, Bellingham, so he only becomes a reserve player. This is certainly a challenge and also pros and cons in his heart too. On the one hand he does need more minutes, but Ancelotti will not throw him as a starting if in a full team condition complete for a certain match. So, indeed if there will be a loan, it makes sense, only if Real Madrid really agrees.