Manchester United winger Ashley Young joined manager Louis van Gaal in praising the fighting spirit of the Red Devils after yesterday's FA Cup win at Preston.
The 29-year-old replaced striker Falcao in the 60th minute of the game and helped turn the game in his side's favour after turning provider for his team-mates in a number of occasions.
"We showed that fighting spirit that we've always had throughout the years," Young told MUTV.
"We went a goal down, but got ourselves back into the game.
"It was disappointing [to go behind] with all the possession we'd had. We had to fight back, we said before the game that we wanted to get through to the quarter-final and we've done that so we're delighted.
"The manager said he wanted to change things when I came on. Any system he wants to play, we're all out there to do a job and we've got many players who can play in a number of formations.
"I saw the first goal deflect and it seemed to take an age to go in, but once it did, we wanted to push on and get another.
"As for Marouane [Fellaini], I wouldn't like to play against him, he's definitely a handful for any defence and he's shown that again. I'm delighted for him after his performance today, I think he deserved it.
"Wayne [Rooney] practices penalties in training, and you can tell by the way he strikes the ball that it was going to go in. We see it every week and I'm delighted to see him get on the scoresheet."
Manchester United will host Arsenal in the next round of the competition and the Englishman admits that it will be a tough game for the Red Devils.
"We're pleased to get a home tie, to be honest," he said.
"We know it will be a tough game, it's coming to the final stages of the cup.
"I'm sure that if we produce a performance that we're capable of, we'll get through to the next round. We want to win it, and we'll see what happens."