Arsenal could be without seven first-team stars for the Premier League clash against Chelsea on Sunday.
The Gunners made a disappointing start to their campaign with a 2-0 loss at Brentford last week.
Pierre-Emerick Aubameyang and Alexandre Lacazette were surprise absentees as they were unwell.
The club have now revealed that they had tested positive for COVID-19.
Aside from the duo, Alex Runarsson and Willian were also affected by the virus.
Among the quartet, Lacazette and Runarsson won’t feature this weekend as they have not tested negative.
Aubameyang and Willian are still doubtful, and will be assessed ahead of the London derby.
Elsewhere, Gabriel Magalhaes (knee), Thomas Partey and Eddie Nketiah (both ankle) are ruled out.
The Gunners will be playing in front of their home supporters, but they are far from full strength.
Mikel Arteta will be hoping that Aubameyang can return to the mix and make the starting line-up.
The club have recently signed Martin Odegaard, but he may not be registered for the game.
He has completed all the necessary formalities, but still need to receive his work permit.
The same may not be the case for another new signing in goalkeeper Aaron Ramsdale.
He could make the bench against the Blues, provided he is registered by Friday midday.