Juan Mata admits Manchester United are short of confidence after their stalemate at Burnley.
United dominated in the closing stages at Turf Moor and Mata insists it is only a matter of time before Louis van Gaal's principles yield rewards in terms of producing a slick passing game.
The Spaniard told MUTV: "Obviously, we are disappointed. We came here to get three points and we didn't do it. We played better in the second half but it wasn't enough to win.
"Maybe in the build-up [there were confidence issues] as we were trying to build up from the back but sometimes we didn't do it well. We have to keep fighting because that's what the manager wants. We have to believe as we have the quality players to do that.
"I think we were on top in the last 20 minutes of the game but didn't score. We played most of the time in their half which is good but, if you don't score from these chances, then it's not good enough. I believe, when we try to play football in the last third, we can create but we played too many long balls in the first half which is maybe why we didn't play as well.
"If you see the players that we have, we can play good football. It's just a matter of keeping working, believing and being patient when building from the back."
