Casemiro’s well-taken finish gave Erik ten Hag's men the lead in the first half, before two beautiful team goals after the break, from Luke Shaw and Marcus Rashford to make it three against the Cherries.
United extend our lead over fifth-placed Tottenham Hotspur to five points and close on Newcastle, who drew 0-0 with Arsenal at the Emirates Stadium.
FIRST HALF - UNITED DOMINATE
Before the game began, Lisandro Martinez took to the Old Trafford pitch to show off his World Cup winner's medal to the United faithful, who welcomed the defender back with a thunderous reaction.