In our last game before the international break, the Reds lost 2-1 to Wolverhampton Wanderers in the Emirates FA Cup - the first time Ole has suffered successive defeats since taking charge in December, following the 2-0 defeat at Arsenal in the league the previous weekend.
However, the clash against the Hornets offers United a chance to get back to winning ways and continue the battle for a top-four spot.
Watford have been in good form themselves of late and head to Old Trafford two weeks after qualifying for the semi-finals of the FA Cup, thanks to a 2-1 win over rivals Crystal Palace.