The Portuguese was a standout performer against the Royals.
"It is very important, the manager has told us that he wants to win the FA Cup and we are very focused on this competition," the 26-year-old told MUTV. "We prepared very hard for this game and we did well to win, which is the most important thing.
"I have been injured for a long time and it is always difficult when you come back, but I've worked very hard and part of what I did on the pitch was because I've worked very hard. I will continue to work hard to do my best.
"It was nice to help the team, it was a beautiful evening and I have to keep working hard to try and help the team every time I get on the pitch."