Retired Italian referee Paolo Tagliavento has admitted his biggest mistake was disallowing Sulley Muntari's goal during Milan-Juventus 1-1 draw in 2012.

The former Ghana midfielder beat Juve goalkeeper Gianluigi Buffon with a header from close range, but the match officials failed to spot that the ball had crossed the line and waved play on.

Reflecting on the incident, the 45-year-old retired official whose career was marred by several controversial incidents, from testifying during the Calciopoli scandal in 2006 to his role as the fourth official in 2012 Inter-Juve match, although he admits not allowing Muntari’s goal will go down as his most ‘obvious’ error.

“Muntari’s goal against Juve (in 2011/2012) was my worst mistake; today I could have avoided it in a few seconds.”

“Mourinho’s handcuffs gesture was not pleasant. It only annoyed me for a second because after the game everybody said that I officiated the game very well. After 15 years and 221 games, I know many players very well. We respect each other.”

Watch the disallowed goal below: