Arsenal boss Unai Emery hinted that Granit Xhaka will face internal disciplinary action for his foul-mouthed reaction to being substituted in Sunday's Premier League draw with Crystal Palace.
Xhaka, recently chosen as the Gunners' captain by his team-mates, was left fuming 60 minutes in when he was hauled off for Bukayo Saka.
The hosts had let a two-goal lead slip by that point, with goals from Sokratis Papastathopoulos and David Luiz cancelled out by Luka Milivojevic and Jordan Ayew as Palace fought back to 2-2.
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Sokratis went on to score what Arsenal believed was the winner, only to see the goal overruled through VAR for a foul in the build-up.