Chelsea striker Diego Costa has trained alone at the club's Cobham training ground for a second successive day.
Costa missed Chelsea's win at Leicester on Saturday with a back injury, according to boss Antonio Conte.
The 28-year-old Spain international has been linked with a move to China and claim he has fallen out with Conte.
Chelsea - who top the Premier League - return to training on Tuesday and the club insist Costa's solitary sessions are to aid recovery from injury.
Costa, who has scored 14 Premier League goals in 19 appearances this season, missed three days of training last week and will be evaluated again on Tuesday to determine whether he can rejoin first-team squad.