Lee Mason has left the referees’ body PGMOL by mutual agreement after making a mistake as the Video Assistant Referee in last weekend’s 1-1 Premier League draw between Arsenal and Brentford, Professional Game Match Officials Limited said on Friday. Ivan Toney’s equaliser for Brentford saw then-league leaders Arsenal drop two points in the title race but replays showed the goal should have been ruled out for offside in the build-up.