Manchester United manager Louis van Gaal gave his backing to misfiring striker Radamel Falcao, after watching former player Danny Welbeck knock his side out of the FA Cup on Monday. (1:46)

Manchester United have been given an injury scare ahead of Sunday's game against Tottenham after Ashley Young limped away from Old Trafford following the 2-1 FA Cup defeat to Arsenal, sources have told ESPN FC.

United will already be without one winger for the visit of Spurs, rivals for a top-four finish, as Angel Di Maria is suspended after his red card against the Gunners.

Young, who completed the 90 minutes against Arsene Wenger's side, could be a doubt as sources saw him hobbling after United's FA Cup quarterfinal exit.

When asked how bad the problem was, the former Aston Villa man would only say: "We'll see."