Frank Lampard says Kai Havertz has Covid-19 symptoms and that he is self-isolating but is not too unwell after missing Chelsea's 3-0 win over Rennes.
UEFA testing saw Havertz pull out of the squad on Monday and he will now need to isolate for at least 10 days, which rules him out of Chelsea's upcoming game with Sheffield United.
Due to being symptomatic, the 21-year-old will likely miss out of Germany's upcoming international games.
Lampard explained the timeline that saw the £62 million ($70m) signing from Bayer Leverkusen miss out on the midweek Champions League encounter.