With 83 minutes on the clock, Aaron Wan-Bissaka received the ball and wanted rid of it as soon as possible. Paul Pogba was free and Wan-Bissaka somehow overhit it to a Watford player. The pressure had told.
Wan-Bissaka had enjoyed a proactive hour and then time caught up with him. This season has found out plenty of Manchester United players and Wan-Bissaka is one of them.
United are still fourth but in every other sense they are Europa League standard. Supporters booed at full-time, not out of dissatisfaction with the performance but the meek mentality of the players. Whoever ends May in fourth will have done so by default. Those who miss out might be closer to the bottom than the top.