The youngster is out with an ankle injury sustained in the North London derby against Tottenham a week ago.
It is unclear how long he will be out for at present, with Arsene Wenger set to inform the media about his condition later on Tuesday.
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Chelsea legend Didier Drogba has revealed his top 11 Chelsea career moments during his recent interview on Chelsea TV.
The start of the 2017-18 Premier League season is just around the corner and is shaping up to be one of the most competitive yet.