The reigning champions were missing Toni Kroos and Rodrygo against Celta Vigo last weekend due to illness and injury respectively, but the pair have been back in training this week and should be available.
Kroos is likely to replace Eduardo Camavinga in the starting side, with Rodrygo expected to be named on the bench for the trip to RCDE Stadium.
Nacho is Real Madrid's only fitness doubt, with the defender picking up a muscular issue earlier this week, although he is expected to shake off the problem to make the bench.
Kroos for Camavinga could be the only change from the side that started the 4-1 success over Celta, with Vinicius Junior and Federico Valverde again set to play alongside Karim Benzema in the final third.
Antonio Rudiger will find it difficult to break into the Real Madrid defence this season due to the presence of Eder Militao and David Alaba, and the German will likely have to accept a spot on the bench once again here.
Marco Asensio continues to be linked with a move away from Bernabeu, and it remains to be seen whether the Spaniard plays a part this weekend.
Eden Hazard and Lucas Vazquez are also options for Ancelotti, but there are not expected to be any surprises when it comes to the starting XI on Sunday night.
Real Madrid possible starting lineup: Courtois; Carvajal, Militao, Alaba, Mendy; Kroos, Tchouameni, Modric; Valverde, Benzema, Vinicius