The Red Devils continued their all-conquering form with another win to make it eight in a row for Ole Gunnar Solskjaer.
The Norwegian has made a real case to become their permanent choice as manager after their impressive form.
And the latest result came up against an Arsenal side who had just beaten Chelsea.
United prevailed 3-1 victors at the Emirates last night, with Alexis Sanchez, Jesse Lingard and Anthony Martial getting on the scoresheet.
The Red Devils are playing with real fluidity at the moment, with a number of players rejuvenated under Solskjaer.
One star that has been a revelation is Marcus Rashford, who has scored four goals since the arrival of the 45-year-old.
The Englishman did not start against Arsenal last night as Solskjaer rotated his squad.
But that did not stop the 21-year-old from showcasing his skills – this time on his own team-mate.
In a pre-match warm-up drill, Rashford and other United players participated in a game of Rondo.
Fred was the man in the middle tasked with intercepting the ball.
But Rashford was in no mood to spare the Brazilian midfielder, nutmegging him with a piece of outrageous skill – to the glee of his team-mates.
Juan Mata, Phil Jones and Diogo Dalot were among the players who were jumping for joy.
Arsenal legend Ian Wright was full of praise for United after the FA Cup clash.
“We’re seeing tremendous performances,” said Wright.
“Manchester United look like different players. The way they are playing, they couldn’t have been enjoying it under Jose Mourinho at the end.”