Manchester City boss Pep Guardiola recognises Manchester United have momentum behind them ahead of Sunday's derby.
United's four wins in a row has lifted them to fifth, five points behind champs City but with a game in hand.
And Guardiola said: "Always I expect the best. The quality they have has been clear, they got very good results against top sides - Southampton, Arsenal at home, Liverpool at home. The momentum is there.
"I don't have to say anything before big games, there are plans to attack and defend and that's all, always I believe it's a big opportunity to express our skills, in front of thousands, millions of people.
"The best way is to be yourself and try to show as much as possible.
"Don't be scared, be up front and try to play good, if you do the consequences will be victory. I prefer to be active rather than reactive. My teams have always been like this."
