United opened the scoring in the 53rd minute when Ashley Young blasted the ball home from a tight angle after great work by Pereira, Mata and Nemanja Matic.
The goal galvanised United and they doubled their lead five minutes later when Mason Greenwood’s fine strike was too good for Bizot.
It was 3-0 to United in the 62nd minute when Mata scored from the penalty spot after Brandon Williams had been fouled and Greenwood added another goal almost immediately with a low shot after Mata had created the opening.
United strolled through the rest of the match with their place at the top of the group confirmed.