Chelsea winger Eden Hazard is a doubt for the Premier League visit of Crystal Palace as he continues to be hindered by a back problem.
The Belgium international has missed the last two games - the thrashing of Burnley and narrow Carabao Cup success against Derby - with the issue.
Assistant coach Gianfranco Zola said in mid-week that Hazard's fitness was improving and the 27-year-old did appear in training on Thursday.
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But manager Maurizio Sarri says it is unlikely that Hazard will start the game after suggesting he is unable to play for longer than 45 minutes this Sunday.