The England international received a nasty challenge to his knee during the closing stages of the 1-1 draw versus Manchester United.

Palmer has since failed to report for team training and manager Enzo Maresca has admitted that he could be doubtful for the games ahead.

The news is a potential blow for the Blues. They have had a tough time against the Gunners over the past few campaigns.

Sunday is the best opportunity to get the better of them, but they will have to do it without their main talisman in Palmer in the number 10 role.

Chelsea face Noah in the Conference League on Thursday before Sunday's derby. They will be aiming for a fourth-straight win in the competition.

Palmer is obviously not registered for the competition. Romeo Lavia , Wesley Fofana and Ben Chilwell are also not eligible to play tomorrow.

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