Howard Webb admits Mateo Kovacic should have been sent off in Man City's 1-0 defeat by Arsenal after Michael Oliver failed to show him a second yellow card - and says decision would not have been overturned had he been shown a straight red earlier

Manchester City's Mateo Kovacic should have seen red against Arsenal, Howard Webb admitted on Tuesday night, as the refereeing body PGMOL owned up to yet another major mistake.

For the second successive weekend, the biggest game in the Premier League was overshadowed by an officiating error.

Referee Michael Oliver failed to dismiss Kovacic when he fouled Declan Rice while already on a yellow card, a week after Luis Diaz's opener for Liverpool at Tottenham was wrongly disallowed for offside.

Speaking for the first time since the Diaz debacle on the PGMOL's Match Officials Mic'd Up programme, Webb confessed that mistake harmed the refereeing body's reputation.