Casillas said: "We have to be cautious, with humility because we are facing off is very tough tournament.."
Champions League knockout round first leg, Real Madrid will be a guest Veltins Arena Schalke challenge (Wednesday 20:45). Casillas in an interview with UEFA's official website said in an interview: "(game) will be very tough German stadium atmosphere is very strong opponents think have a chance for revenge, so the game will be very difficult to play..."
"Last season I played against and with each other does not make us the benefit of the season. Even make the other has an advantage in Gelsenkirchen game will be very easy, we will repeat last year's results of the competition idea is wrong. On the contrary, We must be careful, with humility go away. It will be very difficult two knockout. "
"This season we have lost some of the team play is very important player, but we also welcome several new players, they have become the team's key players, such as Ha Meisi and Cross Data swing where is the best proof. Cross feels very comfortable in handling the ball. He likes to pass, for rapid large-scale shift. "
"He is young, fast. He has been in a very long time to show a high level, so Real Madrid will introduce him, in addition to the focus of the team is also considering his age, and he has proved himself to be the key midfielder players. "