Chelsea are in the market for a striker after boss Antonio Conte told Diego Costa he is not in his plans for the upcoming season.
They missed out on Romelu Lukaku as Manchester United snuck in ahead of them and sealed a £75million deal for the Belgian.
Real Madrid's Alvaro Morata, Torino's Andrea Belotti and Borussia Dortmund's Pierre-Emerick Aubameyang are three others who have been linked.
But now it seems they are in for the two-time Premier League winner Aguero.
Alternative strikers Chelsea could sign instead of Romelu Lukaku Fri, July 7, 2017
Who could Chelsea sign instead of Romelu Lukaku?
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Alvaro Morata (Real Madrid)
Manu Sainz claims Chelsea want Sergio Aguero and Pep Guardiola has given the deal the green light
Sergio Aguero has been given the green light to join Chelsea according to Manu Sainz
They tell me that Chelsea want to Kun Aguero. Guardiola would have already given the ok to operation
Manu Sainz on Chelsea's interest in Sergio Aguero
Sainz tweeted this afternoon: "They tell me that Chelsea want to Kun Aguero. Guardiola would have already given the ok to operation…".
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Aguero has been linked with an exit from the Etihad following the arrival of Gabriel Jesus in January.
The Brazilian was starting ahead of Aguero until he suffered an injury in February which ruled him out until the end of April.
Arsenal were linked with a move for the Argentine earlier this summer in a potential swap deal for Alexis Sanchez.
Pep Guardiola is said to have approved the sale of Sergio Aguero to Chelsea
The sale of Aguero to Chelsea would free up squad space as well as raise funds for a move for the Chile star.
City are keen on signing Sanchez despite Gunners boss Arsene Wenger saying he would not sell his prized asset to a direct rival.
Aguero has scored 122 Premier League goals for City in 181 games since arriving from Atletico Madrid in 2011.
He has become a hero at City and will always be remembered for the dramatic late winner against QPR in 2012 to lead them to their first league title in 44 years.