The Black Cats were bundled out of the Cup by Huddersfield on penalties, but Masuaku was happy to make his debut.
“It was two months since my last game,” he said. “I trained with the team after no pre-season but I’m feeling good.
“I’m disappointed we lost tonight but from a personal point of view I had a good game. It was nice to be out there with the boys.
“I was waiting for this moment. In 2016, I played against Sunderland when I was at West Ham. It was really good and I played in a good atmosphere.
“There were behind us tonight which is always nice. Hopefully Saturday, we beat Brentford with the help of those fans.”
He added, “It’s a great Club and I am enjoying myself. I’ve been working hard and I just want to keep going.
“The manager decides whether I play but I am just going to continue working hard in training and trying to fit in the team but I want to bring a will to win.”