According to Goal's Sam Lee, he said: "I have until 2020, I think. The truth is that I hope to see out my contract, and I'll try to do my best from here until the end of the season, and after that we will see what happens with me."
The striker was further asked if he wanted to stay put at the Etihad Stadium:
"Yes, for me yes. Obviously my plan is not to change clubs. The truth is I'm very happy here, but as always, as I said before, the club has the last word, they're the only ones who decide, because obviously the club is the one who makes the decisions, they are the ones who say you have to go or have to stay, so I'll respect whatever they tell me."
Lee provided more context to Aguero's comments, which came after City beat Watford 3-1 on Tuesday:
Sam Lee @Sammy_Goal
So Aguero. He doesn’t even walk through the mixed zone usually, some of the City players have found another way around, which he regularly uses and abuses. Today he walks through (one of only about four players to do so), looks around for reporters and does a live radio interview2018-1-3 00:47:48
Sam Lee @Sammy_Goal
his answer to the Q about his relationship with Guardiola (“Everything’s fine”) is a classic case of ‘you had to be there’. I don’t think he’d be a very good poker player. Guardiola’s suggested they don’t get on, too. It may amount to nothing, like last time, or maybe it will2018-1-3 00:55:05
Aguero is City's all-time record goalscorer, but his future has been in doubt since the club signed Gabriel Jesus in January last year.
The 29-year-old finished last season with 33 goals and has 16 in 22 games this season after adding to his tally against the Hornets, but there have been suggestions Jesus is better able to meet the demands Pep Guardiola places on his forwards thanks to his energy and work rate off the ball.
Aguero appears to have improved that side of his game somewhat, perhaps in response to Jesus' arrival and his desire to remain at the club.
ESPN's Jonathan Smith and the Press Association's Andy Hampson were both impressed with the shift he put in against Watford:
Jonathan Smith @jonnysmiffy
Too easy at times, City should be far more comfortable than 2-0. Aguero working extremely hard and deserves a goal. He'll get it...2018-1-2 20:41:45
Andy Hampson @andyhampson
3-0. Aguero has a goal his hard work tonight has deserved. Simple finish too after Gomes spilled a De Bruyne cross2018-1-2 21:20:48
Keeping that up in Jesus' absence—the Brazilian is set for a four to six-week spell on the sidelines through injury, per Lee—could help Aguero keep his place at the club beyond the summer, but his comments suggest his future is up in the air.
Guardiola has shown in the past he's willing to move players on if they don't fit into the system he desires regardless of the talent they possess—he shipped Ronaldinho and Zlatan Ibrahimovic out of Barcelona, for example—so Aguero's phenomenal record and status at City may do little to spare him the same fate.