Arsenal defender Gabriel has tested positive for coronavirus, ruling the Brazilian out of the Gunners' upcoming matches against Brighton and West Brom.
It was announced on Boxing Day that Gabriel would have to self-isolate after he was flagged as a close contact of someone who had tested positive for the virus.
He missed the 3-1 victory over Chelsea as a result and news of his positive test means he will be absent for the trips to Brighton and West Brom on Tuesday and Saturday respectively.
A statement on Arsenal's website said: "Gabriel has tested positive for Covid-19 and is isolating according to UK Government and Premier League protocols.
"We will continue to monitor and support Gabriel, and we are hoping he will be available again after our next two matches."
Compatriots David Luiz and Willian were also ruled out of the Chelsea game by illness, but the club clarified the pair had tested negative for Covid-19 and were due to rejoin the full squad on New Year's Eve.