Aguero was considering returning to his first love Independiente who were relegated last season.
He was also linked with a big-money move to Real Madrid but a deal failed to materialise.
"I love Independiente and when they were relegated I even thought about moving back there," he told The Sun.
"I wanted to help the club to go up again. I definitely thought about it, but my agent told me City would have killed us if we had.
"I know my job is at City, I am just saying the thought passed my mind when Independiente went down.
"I've been very happy at City since the day I came but I'm definitely going to back Independiente, in a few years as I want to finish my career there."
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