Mikel Arteta has confirmed that key defender Gabriel has been ruled out 'for weeks' in a crucial injury blow for Arsenal ahead of Sunday's north London derby against Tottenham.
The 27-year-old, an ever-present this season in a Gunners side who have conceded just five Premier League goals, suffered a thigh injury on international duty for Brazil against Senegal at Arsenal's Emirates Stadium last weekend.
He will now have a scan on Wednesday - the day Arsenal take on Bayern Munich in the Champions League - to assess the severity of the injury.