Robin van Persie admits the weekend's round of FA Cup shocks lifted spirits at Manchester United.
United were held 0-0 on Friday night at Cambridge United.
"After the Cambridge game, everyone was a little bit down," van Persie admitted. "But they played well so you have to give them credit because it's quite a stunt what they did.
"But in a way, on Saturday, the whole mood changed. Manchester City were out. Chelsea were out and, suddenly, we are in it with a home replay against Cambridge.
"And of the so-called big clubs, with how it is now, it is just us, Arsenal, Liverpool and West Ham, but we are the highest left in the competition. I think it has been 11 years since United won it last but I think we have a big chance this year.
"We want to win it. But again, we have to look at the first game only, because that is the next game against Cambridge."
