Manchester United boss Jose Mourinho has admitted that his players are struggling to cope with negative results after watching them crash to a third defeat on the spin.

The Red Devils were beaten 3-1 by Watford in the Premier League, leading to the Portuguese questioning his side's mentality and ability to bounce back.

"We started the season very well and had good results. I feel the first moment we had a defeat, a difficult situation, some of the boys are having a bit of difficulty coping with the negativity," he told BBC Sport.

"You see Ashley Young, his mentality the happiness and confidence he brought to the game is something more players need to have."

Mourinho also put his side's latest defeat down to refereeing errors and bad luck, but was quick to admit that his side made "individual mistakes and collective mistakes" throughout the contest.

United's loss at Watford leaves them in sixth place in the Premier League table.