"Anything is possible in football but when you are playing against Real Madrid things are not so easy," he told reporters.
"Galatasaray will try everything. I am sure about the ambition and enthusiasm of my players. We have prepared ourselves for any kind of result.
"If [Jose] Mourinho says he will be unhappy even with a 2-0 loss, I agree with him. He is the coach of Real Madrid. If I was in his shoes, I would think the same."
Madrid have reached the semi-finals of the competition for last past two seasons.