Paul Pogba scored the only goal of the game in the 71st minute when steering a Marcus Rashford cross through the legs of Nick Pope.
It was Burnley's fifth defeat on the bounce at home to the Red Devils and the 12th time in their last 13 meetings at Turf Moor where they'd failed to score.
Here are our RATINGS as Burnley's first league game of 2021 ends in defeat...
Here are our RATINGS as Burnley's first league game of 2021 ends in defeat...