Los Blancos are currently leading the way in the La Liga title race this season, with a ten-point gap at the top, and a five-game winning streak against their old foes.
However, the Italian coach is taking no chances over his squad, as they chase Champions League glory in the coming weeks.
Defender Ferland Mendy misses out after picking up an injury against Mallorca last week and Ancelotti faces a real selection headache over Karim Benzema’s replacement.
Mendy’s Le Bleus teammate was tipped to be winning his fitness battle, but Ancelotti has opted for caution over the 34-year-old, with a mixed list of options to replace him.
However, Eder Militao is back to bolster the backline, following illness, with the returning Luka Jovic amongst the options to fill in for Benzema in the attack.