Barcelona midfielder Cesc Fabregas says they cannot be anything less than at "100 per cent" against Champions League opponents AC Milan.
The Blaugrana face Massimiliano Allegri's at San Siro next Wednesday, and the Spain international and has admitted it will not be easy for his team.
"It is certainly going to be tough against Milan," he told Marca. "We will have to be at 100 per cent if we want to set ourselves up for the second-leg."