Callum Hudson-Odoi has limped off the field in the first half of Chelsea’s Premier League game with Burnley.
The 18-year-old winger, who had forced himself into Maurizio Sarri’s first team plans in recent weeks, went down towards the end of the first period after suffering no apparent contact.
Hudson-Odoi, who was replaced by Pedro, limped down the Stamford Bridge tunnel with the assistance of club staff.
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The injury to his home-grown star will worry Sarri as Willian was already out of the match-day squad with a thigh injury, although the Brazilian is expected to be fit for the Blues next Premier League game against Manchester United.