Arsenal's miserable week continued into Sunday morning with confirmation that Gabriel sustained a knock in Saturday's FA Cup exit to Southampton and faces a fitness assessment ahead of Tuesday's Champions League quarter-final against Sporting CP.
The Brazilian centre-back limped off in the second half at St Mary's and was replaced by William Saliba. Arteta said after the game his players must look in the mirror and that there can be no overthinking — only a response.
Arsenal have now lost the Carabao Cup final to Man City and the FA Cup quarter-final to Championship side Southampton within three weeks. The Premier League title, where they lead by nine points, is their only remaining domestic target.
They face Sporting CP on Tuesday in their UCL quarter-final first leg at the Emirates, a tie they will be expected to manage, but losing Gabriel would be a significant blow.
