Jose Mourinho has hailed his Manchester United players for an impressive performance against Real Madrid in the UEFA Super Cup, but believes that one of the opposition goals was offside.

The Red Devils succumbed to a 2-1 defeat at the hands of Real in the Macedonian capital of Skopje, Casemiro and Isco putting the Spaniards ahead and Romelu Lukaku halving United's deficit.

However, Casemiro's opener has proven contentious, with replays potentially showing the Brazilian on the wrong side of the last man when latching on to Dani Carvajal's through-ball.

Mourinho told BT Sport after the game: "I think we did well, I think we lost to one goal which shows the result was really short and one of their goals was an offside. With a good VAR system it would be 1-1 and extra time.

"They could have scored more goals than they did, we could have scored more goals than we did. They had a period of dominance at middle of the first half and we had a period of dominance at middle of the second half.

"We were playing a team full of fantastic players, we discussed the result until almost the end. I say almost because with Cristiano Ronaldo coming on, because every time Ronaldo wanted a free kick the game was stopped. We gave them a fight but have reasons to leave optimistic and proud. Let's go for Sunday."

Man United will host West Ham United on the first weekend of the Premier League season.