Manchester United boss Jose Mourinho admits facing Watford will be a "test".

The Hornets go into the game boasting a 100 per cent record.

Mourinho said: "It's clear (the test). Four matches, 12 points. We know that three of these matches were at home, so in relation to the 12 points maybe we can speak about a little advantage in relation to other teams with two home and away.

“But fantastic start - 12 points is great for them. Good victories at home, strong performances, congratulations to Javi and to the players and to the club overall because it was a very good start."