You cannot make mistakes in the Champions League,

I was curious to see my players after their first Champions League game and they played very, very well,

You use up a lot of mental energy in the Champions League.

The lesson to learn is to pay attention for 90 minutes because in front of you are great champions.

With 10 men it became really difficult. Losing here is nothing to be ashamed of. They are the German champions.

I try to forget the past.