New Manchester United goalkeeper Andre Onana has reiterated that he will always demand more from his teammates.

Onana was seen angrily talking to new teammate Harry Maguire during a friendly loss to Borussia Dortmund.

The Cameroonian was furious at Maguire not doing enough to stop a Dortmund attack that nearly resulted in a goal.

''I demand a lot of my team-mates because also they demand a lot, they trust in me,'' he explained to reporters.

''They play a lot of balls back to me, so I have to give them confidence and I want my players to give them to me to give me confidence.

''I demand [from] them a lot and I will demand from them a lot because they are great players. Now, for me, it's a big honor to play with these defenders.

''With [Lisandro] Martinez, Harry [Maguire] they are doing great things. They are important players for the club. I'm very happy to be part of this team and playing with them is something great.''