Aguero's two-goal cameo after coming on as a substitute against Swansea City stole the headlines and Coyle admitted, even as an opposition manager, he could not help but be impressed.
"I think impressed is probably an understatement," he said.
"He was fantastic. He was something that, as a football lover, you want to see.
"You want to see the best players in the world operating in our league and he is certainly one of those