Jesse Lingard believes Anthony Martial will only get better for United and has described him as a nightmare for defenders.
Martial was impressive in the match against Real Madrid, dribbling past three defenders to set up Lingard.
Mourinho praised his performance and has called for him to be consistent and Lingard expects him to deliver.
“Anthony’s got great feet when it comes to close control and he’s got the confidence to do it in a game,” Lingard told MUTV.
“It’s a nightmare for defenders. Luckily I’ve got myself into space at the back post, got away from my man and then put it away.
“He’s only going to get better. He’s still young and if he carries on with that confidence [he showed for the goal] in the next few games and throughout the season, he’ll help us a lot.”
United won on penalties after a 1-1 draw with Madrid in San Francisco, capping a positive pre-season tour in which they have also beaten Manchester City, Real Salt Lake and LA Galaxy.