Sergio Aguero could be sidelined for up to two months as he continues to struggle with a knee issue.

The Manchester City striker suffered the injury against Burnley in June. He quickly underwent surgery in Barcelona but was forced to miss the rest of City's 2019-20 campaign, including their run to the Champions League quarterfinals.

"We knew the injury was difficult. He is doing the job (of recovering)," City manager Pep Guardiola told Friday's news conference, as reported by The Guardian's Jamie Jackson. "Sergio was out for a long time and Sergio is not a guy who regains physical condition quickly, so I think in one month or two months he will be ready."