Chelsea ace Mata convinced Torres can shock Barcelona defence
"On the counter-attack he's going to be very dangerous, always a threat on the shoulder of the last man," said Mata.
"We're capable of scoring at the Nou Camp. We can hurt them on the counter-attack.
"The Nou Camp is a big pitch, and they're going to try and open up the spaces. But we're always dangerous on the counter in those situations, especially the more open it is."