Manchester City striker Sergio Aguero believes that he will be out of action for approximately a month after he was diagnosed with a grade-two muscle tear in his hamstring.
Aguero had to be stretchered off midway through the first half of Argentina's 2-0 loss to Ecuador in their 2018 World Cup qualifier on Thursday after complaining of pain in his left hamstring.
After undergoing tests to determine the severity of his injury, Aguero told reporters: "I think I'll be a month without playing. I'll go to the AFA (Argentinian Football Association) national team compound to carry on with treatment.
"To recover from the tear I'll surely need a month although it will depend how it evolves.
"I'd been playing very frequently and was in doubt [for Thursday's match] until the last minute but as a player you always want to be there and never know what can happen."
The AFA added: "The studies we did today show that Sergio Aguero has a grade-two muscle tear."
City, meanwhile, will not have the services of Aguero for up to seven matches, which includes their Champions League double-header against Sevilla and a derby trip to Manchester United.