Apparently, Mata declared to a Spanish newspaper:
“It’s very important because it’s a trophy that United haven’t won and it’s another route into the next Champions League.
“We’ve watched videos and analysed their style of play, which is lively, with talented players and a real defensive intensity. The boss has made it clear what this semi-final means to them, to the fans and the city, so we must be at our best to overcome them.
“Personally, I think they’re an uncomfortable opponent because they man-mark and they’re fast in attack.”