The massively over-hyped encounter ended up being a rather drab affair but Can, making his first Premier League start of the season, accepted a side of their quality has to test opponents more.
"I think we deserved to win the game because we had the better chances and played better," he told liverpoolfc.com.
"It wasn't our best game but we played better than Manchester United.
"We didn't keep the ball too well. We have to do it better in the next game. We will learn."
Can came in for Adam Lallana, arguably Liverpool's best player this season who was only deemed fit enough for the bench after a groin problem sustained just before the international break.