Manager Louis van Gaal says Manchester United will play to win when they face Chelsea on Saturday.
The Blues are strong favourites to win the English Premier League but things could change if the Red Devils cause a major upset at Stamford Bridge.
But van Gaal also admits that it will not be easy.
"The challenge is bigger than big," van Gaal said on Friday afternoon.
"Firstly, Manchester United has not given the best results in away games and, secondly, Chelsea do not lose so much at home. So it will be very difficult.
"Chelsea play at home but I think they will be satisfied with a draw. However, of course they want to beat Manchester United and we want to beat them.
"I have said this also that 'we live for these titles'.
"We are doing it for that. That's the only satisfaction - that you have a title. If you are second or third, you can still play Champions League but it is the title that is more fixed for you.
"It comes with your name and that is why managers are fixated on titles. When you reach that goal, you are happy
"To be involved with the game, to be involved with young people to reach the goal is another goal of mine. That's why I am still a manager because I don't have to work anymore."