Gabriel Maglahaes faces a late fitness test ahead of Arsenal's crucial visit to Newcastle this weekend, with centre back partner William Saliba already expected to miss the trip to St James' Park.
Saliba has been absent for each of Arsenal's past seven matches since hurting his back against Sporting in March.
Gabriel, meanwhile, was taken off towards the end of Arsenal's midweek victory over Chelsea following a kick to his ankle.
That prompted fears that Mikel Arteta could be without both of his first choice centre-back pairing for Sunday's clash.