Schalke striker Eric Maxim Choupo-Moting insists they're capable of upsetting Champions League opponents Real Madrid.
Real go into the tie not in the best form.
Choupo-Moting told AS: "It certainly is true. We've been working hard. Madrid are not unbeatable. Everything and anything can happen and that's why football is so special.
"I'm not sure what the Madrid players are thinking.
"I'd imagine that they're anxious to show the world that the game against Atlético was a blip."
