Chelsea defender Levi Colwill faces a long spell out of action after undergoing surgery on an anterior cruciate ligament injury.

The club said Thursday that Colwill had "successful surgery" after "medical assessments confirmed surgery would be the required course of action."

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The injury occurred as Chelsea reported for preseason training this week, following their victory over Paris Saint-Germain in the Club World Cup final three weeks earlier.

Chelsea manager Enzo Maresca earlier expressed concern about Colwill's injury.

"It was in the first session on Monday, just in the last minutes of the session," Maresca s

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