Zech Medley trained with the Arsenal first-team squad at London Colney today as they prepared for their game against Olympiacos.
Arsenal are short of left-back options with Sead Kolasinac sidelined and Kieran Tierney not yet fully fit, but it seems unlikely that Medley will be called upon tomorrow.
However, the 19-year-old will hope to be involved in some capacity against Portsmouth in the FA Cup on Monday.
Medley, mainly a centre-back, has made three competitive first-team appearances for Arsenal but they all came last season.
Tolaji Bola, another left-back option, also trained with the first-team along with midfielder Matt Smith and forward Folarin Balogun.