Lopez was asked about his rivalry with Iker Casillas.
"I will do what I can to play every match, but the coach chooses who he wants to play. Iker wants to play every match as much as I do, but we have to respect the coach's decision."
He added: "We've done very well these last few days since our break. We have a very demanding schedule and some tough matches at the Bernabéu. We also have the cup ties. The Champions League is further away, but it will be difficult against Schalke 04. They are very important competitions and this year we have to win titles."
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