I think at the moment he just needs a chance and the trust of the coach, so if he can get it of course he can show his prowess in playing, Ancelotti will probably give him more opportunities as time goes on, but I think to get that opportunity of course he has to keep working hard to get it because currently Madrid is filled with a lot of talented players.
Being in a team that has great players will indeed be very difficult to get a regular playing place and that's what Arda experienced but he can improve his quality because he will definitely get the chance to play even if only as a substitute. Real Madrid plays a lot of competitions so it is likely that Ancelotti will rotate and in that condition it is likely that Arda will get the chance to play.
Let's just see how the rotation is done by Ancelotti and we hope he gets the chance to play more often so that he can continue to be a part that is needed by the team in the future.