The reaction to me and Alex Ferguson sharing a laugh in the tunnel before an FA Cup Final became one of the most memorable moments of my career - for all the wrong reasons, Mark Clattenburg has revealed.
Speaking to the Daily Mail's Whistleblowers podcast, the referee said the exchange made him question whether he wanted to continue officiating.
The incident occurred before the 2016 FA Cup Final at Wembley, where Louis van Gaal's Manchester United beat Alan Pardew's Crystal Palace 2-1.
Clattenburg was refereeing the match, when he encountered Sir Alex Ferguson in the tunnel - the legendary former United manager was attending as a guest of the club he had led for 27 years.