Roberto De Zerbi raged he does not like '80 per cent of Premier League referees' after his 10-man Brighton side were held to a 1-1 draw with Sheffield United.
Simon Adingra had fired the home team into the lead at the Amex Stadium after a solo run before Mahmoud Dahoud's red card changed the complexion of the game.
The sending-off came after midfielder Dahoud stamped on Ben Osborn's ankle, opening the door for the Blades to draw level following Adam Webster's own goal.
De Zerbi, now in the midst of his longest run without a league win at Brighton, was booked for his touchline protests and took aim at the officiating post-match.