Manchester United manager Jose Mourinho has admitted that he has been left impressed by Anthony Martial's form during pre-season, but has called on the forward to become more consistent.

The 21-year-old played a full part in Sunday night's penalty-shootout win against Real Madrid, creating the opening goal of the match in California for teammate Jesse Lingard.

Martial, who has produced a string of mixed displays during his two years at Old Trafford, has now been urged by Mourinho to continue working hard in training in order to build up his confidence levels ahead of the new campaign.

"Obviously we want more consistency in his talent. I think today was positive for him, that's why I left him for 90 minutes on the pitch," he told reporters.

"He was enjoying it and trying things, it's important to try things in these friendly matches, so it's good for Anthony and his confidence.

"He is a young player, still time to learn, still time to improve, still time to develop, and it's also his personality. I can say he is training better than before. He's working harder than before. It's just a question to bring his talent more in a consistent way."

Martial has been linked with a move away from United this summer, with Inter Milan and Paris Saint-Germain both said to be eyeing up swap deals.