Mike Dean has admitted he made a mistake by awarding West Brom a penalty in their New Year's Eve clash with Arsenal, according to referees' chief Mike Riley.
Dean and his team of officials were confronted by Arsenal boss Arsene Wenger after Calum Chambers was penalised for a handball in the 88th minute of the 1-1 draw at The Hawthorns.
Wenger was subsequently handed a three-match touchline ban and a £40,000 fine but, on the eve of the introduction of Video Assistant Referee (VAR) technology to English football, it has emerged that Dean has accepted he got the decision wrong.