United started the game – played in Turin due to COVID-19 travel restrictions between Spain and the UK – strongly, but were thwarted several times by Sociedad keeper Alex Remiro.
Fernandes opened the scoring after 27 minutes following a mix-up between Remiro and central defender Robin Le Normand, allowing the Portuguese to roll his 20th goal of the season into an empty net.
⏰ RESULTS ⏰What a night! 😱 Who did it best? #UEL https://t.co/ASC0Mcd7C0
— UEFA Europa League (@EuropaLeague) 1613685699000
He curled in his second from the edge of the box on 57 minutes, a goal initially ruled out for offside but corrected by VAR. Marcus Rashford added the third eight minutes later before Daniel James made it four in the dying seconds of the game.
The second leg will be played next Thursday.