Andreas Christensen will miss Chelsea's match against Manchester City on Saturday due to a positive test for Covid-19, Thomas Tuchel confirmed.
The Blues are currently second in the Premier League standings but are already ten points behind runaway leaders City, emphasizing the critical nature of a positive result this weekend.
Unfortunately for Chelsea, they will have to face the game without Christensen, who has become the club's latest player to test positive for Covid-19.
When asked for his team news ahead of the clash, Tuchel said: "Trevoh [Chalobah] will be out, Ben Chilwell will be out, Reece James out. That's the injuries.
"We have one positive Covid test with Andreas Christensen, so he's out for the game."
Tuchel could opt for the 4-4-2 formation that worked well in the Carabao Cup semi-final against Tottenham, or he could bring in Malang Sarr for his second Premier League appearance of the season.
It's not ideal for such a big game, and Tuchel admitted that if his side loses to City on Saturday, they may well be eliminated from the title race.
"Maybe," Tuchel admitted when asked if defeat would end his hopes.
"The biggest difference so far this season is that they dealt better with injuries and the Covid situation.
"Maybe it's unlucky or maybe they do it better. They've had less injuries to key players and less weeks where they've missed them. They did not suffer from Covid as we did over many weeks. This is the huge difference.
"We had some draws in the season that were unnecessary. If you have your full squad, you create a certain atmosphere that pushes everybody to the edge, and you need to be at the edge at the very highest level if you want to compete with Man City. They are the benchmark. They are the best team in England right now. This is something we have to admit.
"Let's play the game. I'm always up for a good fight, but I'm also realistic. If you look back at the last few games, when we have our full squad, when we feel good, we are always up for a good fight with Man City and we will always dare to push them to the limit and ask them questions they don't like to answer."