Manchester City fullback Aleksander Kolarov says they must not underestimate Manchester United.
The Manchester derby is set for this weekend.
"Manchester United are always [a threat]," the Serbian told talkSPORT. "They are a great club with a great history and if you don't respect them a lot they are going to beat you.
"Obviously they have changed a lot of players and they are progressing now. I think it's important that we win the derby."
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