He said: "We can't think about Liverpool at this moment because they are behind.
"But we must concentrate on United. It's an important game. We will play the second team in the Premier League but it's just a game that carries three points like the others.
"We know very well that it will be a very difficult match but also a very interesting match.
"I think we are doing very well at this moment, we are in good condition. We have a very good mental attitude at this moment."