Mikel Arteta confirmed Arsenal have been dealt two injury blows after their loss to Liverpool - with both Kieran Tierney and David Luiz facing spells on the sideline.
After watching his team's season take another lurch for the worse, the under-fire Arteta was forced to concede that the severity of both issues is unknown.
Tierney picked up a knee injury during the clash at the Emirates, while Luiz, who sat out of the fixture entirely, may even miss a month.
With the scores locked level heading into the half-time break, Tierney was taken off after clearly taking a blow in a challenge with James Milner.