Rashford was shown a straight red by the referee after headbutting Phil Bardsley in United's Premier League clash with Burnley.
The striker lost his temper after a tackle, and an altercation followed, in which Rashford squared up to the defender and bumped heads.
Bardsley was given a yellow card for his part in the disturbance, but Rashford was sent straight to the showers.
He will now miss United's next three fixtures.
September 2, 2018