Arsenal face another injury blow after mark Coquelin broke his nose . Gunners players may need surgery after clashing repeatedly with Olivier players . Arsene Wenger must now come up with another concussion selection headache .
Arsenal face another injury blow after Francis Coquelin broke his nose . Gunners star may need surgery after clashing heads with Olivier Giroud . Arsene Wenger must now put up with another midfield selection headache .