The Spanish forward is likely to miss the clash with Granada this weekend as a result.
It is another blow for the Barcelona man, who has struggled for playing time since recovering from a broken leg.
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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.