David de Gea has issued a rallying cry to his Manchester United teammates and has warned that they must improve if they are to comeback to advance to the Champions League semi-final.
United are 1-0 down after the quarter-final first leg to Barcelona so need to win when they travel to the Camp Nou on Tuesday to progress to the next round.
Ole Gunnar Solskjaer's side beat West Ham 2-1 in the Premier League game on Satuday but while it was a return to winning ways and a vital three points in the chase for top four De Gea admitted United would need to up their game in Barcelona.
“Of course it's difficult, but if you want to be a top team you have to play big Champions League games, and the weekend after it's the Premier League,” said the Spaniard.
Ole Gunnar Solskjaer might have found a new Manchester United partnership
“So you have to be focused and ready for a difficult game again. I think today we didn't play well, we have to improve a lot and now we have a big challenge on Tuesday.
“We will try to fight and win the game. We can go with more confidence after the three points.
“It's a big challenge, a special occasion, in Spain, against Barcelona, a Champions League night, so it's going to be an amazing game.
“We're happy with the win, but at the same time we have to improve a lot.”
