Kevin De Bruyne is set to miss the Manchester Derby with a knee injury that could keep him out of action until December, Goal understands.
Sources close to the Manchester City midfielder have indicated he is likely to miss anywhere between four and six weeks, although further tests are planned on Friday afternoon.
He is also expected to travel to Barcelona for treatment at Dr Ramon Cugat's specialist clinic.
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De Bruyne injured his left knee during Thursday's Carabao Cup victory over Fulham, when Cottagers defender Timothy Fosu-Mensah fell backwards onto the Belgian, who was sat on the pitch with his legs stretched out in front of him.