Aston Villa started the match in the best way possible thanks to Grealish's great goal. The attacker hit an almost perfect shot to beat De Gea and make Manchester United's confidence wobble once again.
United started the game with the chance to go 1 point behind the European spots, but Aston Villa, who need to escape the lower parts of the table, had very clear ideas.
Solskjaer's men froze in the 11th minute when Aston Villa went in front thanks to a great goal from Grealish.
After a piece of play down the right, the ball was dead on the left where the winger was. He received it, faced Wan-Bissaka and hit an excellent shot.
The ball, with a perfect flight, went into the top corner of De Gea's net, who could only stand and watch as Aston Villa went in front at Old Trafford.