The goalkeeper was left out of United’s squad for their first four Premier League fixtures due to a transfer saga with Real Madrid.
However, after that move collapsed on Spanish deadline day, De Gea now faces a battle to regain his first-team spot at Old Trafford, with incumbent Sergio Romero keeping four clean sheets in six matches in all competitions.
De Gea kept a clean sheet for Spain in their 1-0 European Qualifier win over Macedonia on Tuesday and was grateful to coach Vicente del Bosque for giving him his first outing of the campaign.
“I felt good out there,” he said to the Spanish press. “The coach has given me confidence. I am just happy to have played. I wanted to play. I am very grateful to my team-mates who have been superb, and to the manager.