Oleksandr Zinchenko was filmed shouting "f***'s sake" in frustration during Arsenal's goalless draw against Newcastle on Tuesday night.
The Gunners were held at the Emirates after failing to beat the toughest defence in the Premier League, which has leaked just 11 goals in 18 games this season. The result could have a significant impact on Arsenal's pursuit of a first league title in 19 seasons.
Zinchenko was clearly frustrated by Newcastle's apparent time-wasting and expressed his feelings in the direction of fourth official Jarred Gillett, who was also on the receiving end of a Mikel Arteta rant. Despite the protests, Newcastle escaped London with a point.