Manchester City’s 5-0 win over Burnley on Monday came at a cost as Sergio Agüero was forced off the pitch just before the half-time break.

The Argentina international suffered a knee injury following a tackle from Burnley defender Ben Mee.

Pep Guardiola revealed the 32-year-old has been struggling with a knee injury over the past month.

The City manager also admitted the forward will undergo more tests on Tuesday to understand the extent of the damage and stressed the player’s latest setback “doesn’t look good.”

This has also been backed up by the South American’s father, Leonel del Castillo, who told Radio La Red his believes his son is likely to undergo surgery in Barcelona later this week.

“His knee was already hurting and it got stuck during the game. I’m sure it’s the meniscus, but tomorrow they’ll have an MRI scan to understand the extent of it [the damage]. I predict that on Thursday or Friday he will be operated on in Barcelona,” Del Castillo was quoted as saying by ESPN Argentina.

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Agüero’s father expects the player to be out for the next six weeks, meaning he is likely to miss his side’s Champions League clash against Real Madrid.

“He told me he thinks it’s the meniscus, because if it were a more serious injury, the knee would ‘dance’,” he stressed.

Mundo Deportivo have also relayed comments made by Del Castillo, in which he states the attacker wants to go under the knife as soon as possible.

“The doctors knew that this could happen to him at any time. He wants to have an operation quickly now to see if he can make it to the Champions League game [against Real Madrid],” Del Castillo added.