Manchester City boss Roberto Mancini says they need to win their remaining seven games to stand a chance of beating Manchester United to the Premier League title.
United are now five points clear of City at the top of the table.
Mancini said: "After the Sunderland game I said only, 'Believe in yourselves' to my players because we have seven games - 21 points.
"I think with 92 points we will win the title. It is important we arrive in the derby one or two points behind or maybe above them.
"This could be difficult because I don't know if they can lose six points but it is important we believe in this."