The 30-year-old is impressed with the depth of the squad and is looking forward to the new Premier League season.
"This is the best Swansea squad I have ever seen," Britton told reporters. "We now have genuine depth with two players for every position.
"That means everybody has to be at the top of their game or they will be out of the side. It was a great performance against Malmo.
"It's so exciting to be playing [Manchester United] with a new manager after so long. That's going to make it some occasion."
Swansea take on United in their opening game on August 17 at 5.30pm.