Real Madrid boss Jose Mourinho is wary about testing the fitness of Cristiano Ronaldo tonight against Atletico.
Ronaldo came through 70 minutes against Lyon in midweek.
But Mourinho said of the £80million man: "It would be better if the derby was on Sunday. It's normal that after so much time without training and then playing 70 minutes against Lyon he's not in the best condition. If he plays it will be with a risk."
Nevertheless, Mourinho insists he will "play with the best possible team" against Atletico.
He said: "With respect to the fans we cannot joke around. We will give our all at the Calderon and we'll see if that's enough.
"We are very motivated because it will be a very important match.
"Games before Champions League matches are difficult because you can lose concentration, and games after you can be mentally and physically tired, which is also dangerous.
"Playing a derby is difficult because we'll face a great team, but at the same time it will also be easier to play because everyone will be more motivated and will give their all."
