Midfielder Leon Britton says Swansea City can take confidence from previous wins over Manchester United ahead of Sunday's Premier League game.
Swansea, two points adrift of safety, have beaten United four times in the last three years including two of their last three games at Old Trafford.
"We need to believe we can go up there and win because we've done it previously and it's not impossible," Britton told BBC Wales Sport.
"We can take confidence from that."
Britton, 34, played in Swansea's 2-1 FA Cup third round win in January 2014.
And on the opening day of the following 2014-15 season Swansea won by the same scoreline in what was Louis van Gaal's first competitive game as United boss.