Gabriel is part of an Arsenal defence that has conceded just five goals in the Premier League this season
Brazil manager Carlo Ancelotti says Gabriel will be assessed on Sunday after the Arsenal defender suffered a groin injury in a friendly win over Senegal in London.
The 27-year-old pulled up off the ball just before the hour mark and received treatment to his right thigh before being substituted.
Gabriel has formed a key part of the Arsenal defence as they top the Premier League table, having conceded just five goals in 11 league games.
The Gunners face North London rivals Tottenham on 23 November before welcoming Bayern Munich in the Champions League the following Wednesday.
