Arsenal ’s injury problems have deepened after Christian Mosquera was withdrawn before half-time during Wednesday’s home clash with Brentford .

The Arsenal centre-back landed awkwardly after contesting for a header with Kevin Schade, required treatment on the pitch before being replaced by Jurrien Timber.

Mosquera has impressed since his summer move from Valencia, deputising alongside fellow summer signing Piero Hincapie at the heart of defence.

It is unclear how severe Mosquera’s injury is, but his withdrawal leaves Mikel Arteta, who is already without William Saliba and Gabriel, sweating over his defensive options ahead of Saturday’s game against Aston Villa.

The Gunners left Saliba and Leandro Trossard out of the matchday squad against Brentford, with the pair nursing injuries. G

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