Arsenal defender Gabriel Magalhaes has publicly criticised the referee's decisions during their 0-0 draw with Newcastle United on Tuesday evening.
The 25-year-old Brazilian has taken to Twitter to post a clip of Magpies defender Dan Burn pulling on his shirt inside the box with a 'face palm' emoji to suggest that he was shocked the decision was not given.
It was one of two potential penalties the Gunners could have been awarded, as Newcastle became the first team to stop Mikel Arteta's side from scoring so far this season.