Cunha produced a superb winner for United at Arsenal on Sunday night.
Just as he did against Manchester City last week, the striker made a decisive contribution when coming off the bench.
Despite being yet to start for United under manager Michael Carrick, Cunha said afterwards: “I know the quality of the group, everyone has the quality to play, everyone wants to play, of course.
“But yeah, the important decision is to help the team, come here, every single minute that you have is to give everything to help this team, to help the teammates.
“I think we did that well today.”
On Carrick, Cunha also said: "He knows the feeling, he played here so many years. He knows the feeling for Manchester, he knows the feeling for United.
"He knows how the fans want to feel. He tried to show us every single moment, he tried to talk us to understand in moments and say 'everyone is against us', so I think we feel more together."