Brighton looked set for the first Old Trafford victory in their history when former United striker Danny Welbeck reacted quickest after his initial header had been saved, nodding the visitors in front from close range.

However, not for the first time this season, United improved from a lethargic opening period to sweep to victory in the second.

Marcus Rashford levelled when he opened up his body and rolled an excellent shot into the corner from Bruno Fernandes’ lay-off.

Then, with eight minutes remaining, teenager Mason Greenwood headed home his first Premier League goal at Old Trafford this season after Paul Pogba’s volley had bounced into the ground.

The result gives United an 11-point cushion in the battle for a top-four place, although West Ham and Everton could reduce that to eight if they both win their matches in hand.