Argentina have World Cup qualifiers with Paraguay and Peru next month but Aguero has been ruled out for just under a month.
The news will irk City, though Argentina may understandably wish to verify whether the player can at least play some part in their crucial qualifiers.
What is your opinion? Feel free to discuss the article under. You have to comment by using your Facebook profile. Be fair and have respect for other people and opinions!
Since Guus Hiddink arrived at the helm, Chelsea have improved considerably after a tricky start to the campaign.
Newcastle United are staring down the barrel of relegation to the Championship for the second time in the past eight years.