United only finished 6th in the Premier League last season, but saved some face by scooping up the Community Shield, the League Cup and the Europa League.
They will likely finish second in the Premier League table this season but are a huge distance behind champions Man City who could finish 20 points ahead of them. In United's first game since legendary former manager Alex Ferguson had to have emergency surgery on a brain haemorrhage, the visiting fans showed their support to the 76-year-old Scot with persist chants of "we all love Alex Ferguson". Now we have the objective to finish with more than 80 points.
Both managers made attacking changes as former United boss David Moyes introduced Andy Carroll off the bench and Mourinho turned to Rashford in search of a victor.
Those few minutes at the end take me to 500 club appearances, 200 of which have been for @ManUtd.
Lukaku is expected to be back in time for the FA Cup final against Chelsea, and he can't return soon enough because, without him, there was no presence beyond the West Ham centre backs. That's normal. I know the players.
West Ham'sMarko Arnautovic hit an early strike straight at David De Gea before the Austria global could only head over from six yards after Chris Smalling made a mess of clearing Aaron Cresswell's cross.
United are firmly ensconced in second place, while the Hornets have always been safe from relegation danger, and there is bound to be a typical end-of-season feel to the match as United's fans wave goodbye to Michael Carrick the player. He had a more comfortable second half as United struggled to carve out opportunities.
United were developing cohesion and, after Adrian's parry of an Alexis Sanchez strike, Shaw thumped the rebound against the base of the post via a vital touch off the goalkeeper's boot.