Wolves manager Gary O'Neil claimed that Premier League referees own unconscious bias towards the top six after a controversial late John Stones winner for Manchester City.
Stones headed home in the fifth minute of stoppage time, with Wolves adamant that Bernardo Silva was interfering with goalkeeper Jose Sa from Phil Foden's corner.
Pep Guardiola insisted that Sa 'was watching the action perfectly' but O'Neil was left frustrated that VAR suggested Chris Kavanagh give the goal.
Wolves believe they had a goal disallowed in similar circumstances against West Ham in April, when Tawanda Chirewa was stood in front of goalkeeper Lukasz Fabianski.