Jose Mourinho has suggested Henrikh Mkhitaryan needs time to adapt to English football, but the Manchester United manager has backed his signing to become a "top player" for the Reds.

Asked if it takes some players longer to adapt to the English game, Mourinho continued: "I think so, yes. Some players find it very easy whereas others need more time. They need time to feel the intensity, the aggression, the game without the ball and the competitiveness.