With Alaba's injury, Anceloti should immediately look for a new defender. At the moment they do not have an experienced defender to replace Alaba. But I heard the Club's policy they will not look for new players. One of the best options is Aurelien Tchouameni. Daniel Carvajal can also play in the middle. But he is needed at right-back. Currently Madrid only has 2 central defender options Nacho and Rudiger. Aurelien Tchouameni is one good option because of the height and visibility of 1 vs 1 duels is very good. Taking defenders away from younger players may also be ineffective. Madrid will have to fight hard this season if they don't buy new players.