Manchester United legend Roy Keane has admitted he is concerned how Erik ten Hag's side will respond if they go behind to rivals Manchester City in the FA Cup final.
United are looking to deny City the chance to win the treble, with Sir Alex Ferguson's 1999 side the only club to have won the Premier League, Champions League and FA Cup in the same season.
City have already retained the league title and are set for blockbuster showdowns with United in the FA Cup final and Inter Milan in the Champions League final. Ten Hag has already vowed they will "give everything" to wreck City's treble hopes, stating: "We will have to play the perfect game.