Several Chelsea players have not returned for pre-season training after testing positive for COVID-19, according to reports in British media.
The reports did not name the players and Chelsea did not immediately respond to a Reuters request for comment.
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Players who test positive have to self-isolate for 10 days and return a negative coronavirus test before they can take part in training.
Sheffield United, Brighton & Hove Albion and West Ham United were among the other English Premier League (EPL) clubs to report positive COVID-19 cases in recent weeks, the Times said.
Frank Lampard’s side, who finished fourth last season, kick off their campaign against Brighton on Sept 14.
