Sociedad may still be without a point in Group A after three fixtures, but De Gea knows victory is no foregone conclusion. Jagoba Arrasate's side are currently unbeaten in four La Liga games and netted five unanswered goals at the weekend.
"We want to win on Tuesday and continue the good form we’ve shown in Europe so far," De Gea said. "We know that if we get the three points we’ll have one foot in the knockout rounds, but it won’t be easy. Real Sociedad showed they are a strong team when they came to Old Trafford and they’ll be even stronger at home in front of their own fans."
"We know that if we get the three points we’ll have one foot in the knockout rounds."
– David De Gea