As a result, Aubameyang could come back into the team who travel to Brighton on Tuesday – with Gabriel Martinelli the most likely to make way.
The teenager has excelled since returning from a knee injury, however he has played the last two games and Arsenal may decide starting three in a row is too much right now.
Other than that, Mikel Arteta is likely to name the same XI who beat Chelsea on Boxing Day as the Gunners try to kickstart their season.
Fellow Brazilians David Luiz and Willian missed the Chelsea game through illness, but at the time neither had tasted positive for Covid-19.
Arsenal likely XI: Leno; Bellerin, Holding, Mari, Tierney; Elneny, Xhaka; Saka, Smith Rowe, Aubameyang; Lacazette.
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Arsenal squad from: Leno, Macey, Runarsson; Bellerin, Cedric, Chambers, Holding, Luiz, Mustafi, Kolasinac, Mari, Tierney, Saliba; Ceballos, Elneny, Maitland-Niles, Saka, Smith Rowe, Willock, Xhaka; Aubameyang, Balogun, Lacazette, Martinelli, Nelson, Nketiah, Pepe and Willian.
Doubts: Luiz (ill), Willian (ill)
Injured: Gabriel (self isolation following close contact with someone who has Covid-19), Partey (thigh)