Ancelotti was non-committal yesterday over Diego Lopez and skipper Iker Casillas.
"I will decide that tomorrow. I won't give you the starting eleven because I still haven't spoken to the players and I prefer to give it to them first. It will be a competitive team.
"Diego López started work before Casillas, but a goalkeeper's physical condition is not so important. Both have worked very hard. Iker played really well against Chelsea and Diego was excellent against Inter. It's not an easy decision for me.
"The most difficult thing about my job is making these decisions. They are two players who work hard and they are professional in their approach. Small details, which are difficult to explain, will influence my decision in favour of either of them."
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