Man City striker Aguero rates Chelsea, Man Utd as nearest challengers
All three teams have stumbled in their campaign start.
"Man United will be desperate to retain it under their new manager and their squad is impressive," Aguero told Match of the Day magazine.
"Chelsea will also be dangerous, and you know Jose Mourinho will bring out the best in them. But we have a new manager too and I think the other teams will be looking at us as potential champions this season."
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