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The Portuguese midfielder didn't have his best game in a red shirt from a creative standpoint but his determination to win the ball back in extra time received huge praise from United fans.
Having played from the very first minute at Carrow Road, one might have forgiven Fernandes for not having the legs to keep up with Jamal Lewis in minute 25 as Onel Hernandez played a ball past Brandon Williams down the left flank.
But having been in the centre circle, the former Sporting CP man gave it everything he had to sprint back and chase the Norwich left-back - ultimately knocking him off the ball and regaining possession for his side.
This is pretty incredible from Bruno Fernandes man. Deep into extra-time, he's flat out on his feet and has that work ethic :hushed:- OldTraffordFaithful (@OTFaithful) June 27, 2020
Born winner :raised_hands::flag_ye: #mufc pic.twitter.com/WmsSoC5c6m
The energy from Bruno Fernandes to do this after playing 2 hours is simply ridiculous.- :goat::tm: (@TheFergusonCode) June 28, 2020
That, right there, is the mentality of a player who doesn't want to lose.pic.twitter.com/CkuL4OQQft
:muscle::muscle::muscle::muscle::muscle::muscle: pic.twitter.com/DDZfulVJWe- JohnSmith1988 (@Smith1988John) June 28, 2020
Games have been coming thick and fast for players since the return of football and it's really tested their fitness levels.
But Fernandes passed with flying colours here and pushed himself to the maximum to get the ball back, with United eventually going on to secure passage to the semi-finals after a late Harry Maguire winner.
Aside from all his technical skills and attributes, what we see in the above clip from Fernandes is a desire and a mentality to win - a quality that will be of huge importance to United.
Fernandes has already made a monumental impact since joining the club in January and is yet to taste defeat, with seven wins and four draws in his eleven outings in all competitions.