“If he is going to see out that extension to his contract then he will demand a proper replacement and a proper No 9 to play in his system.”
On Tuesday, Guardiola paid tribute to Aguero, who will leave City as the club’s leading goalscorer of all time.
Guardiola told Sky Sports: “Sergio is irreplaceable. I could say in terms of numbers he can be replaceable, it’s not easy when you see more than 360 games played and more than 250 goals, the amount of titles…
“So it’s the legend, the best striker this club has ever had for this century through the years, but is irreplaceable in the souls, in the hearts, in the minds of our fans, of our people, of the players that played alongside him and all the managers who worked with him.”