Chelsea first-team squad and coaching staff have gone into self-isolation ahead of the scheduled fixture against Aston Villa, the club has confirmed.
The decision to self-isolate the team and staff was taken after the winger, Callum Hudson-Odoi, tested positive for coronavirus.
Odoi showed symptoms of the virus on Monday and was placed away from the club since then. His test result came in on Thursday and he tested positive for coronavirus.
The England international is the first Premier League player known to have contracted the virus.
"Chelsea men's team player Callum Hudson-Odoi had a positive test result for coronavirus returned this evening," the club's statement read.
"Chelsea personnel who had recent close contact with the player in the men's team building will now self-isolate in line with Government health guidelines.
"These will include initially the full men's team squad, coaching staff and a number of the backroom staff.
"It is expected that those who did not have close contact with Callum will return to work in the coming days. In the meantime, the men's team building, one of several separate buildings at our training ground, will remain closed.
"The rest of our training facility, Stamford Bridge and our other facilities are operating as normal."
Reacting to the news, Hudson-Odoi posted a video message on social media, saying that he has recovered from the virus and is following health guidelines.
"As you may be aware, I've had the virus for the last couple of days, which I've recovered from.
"I'm following the health guidelines and self-isolating myself from everybody for the week. I hope to see everybody soon and hopefully be back on the pitch very soon."
Chelsea were scheduled to play at Aston Villa on Saturday evening but the game will now most likely be postponed till a later date.