Former refs chief Keith Hackett is fed-up with the antics of Liverpool manager Jurgen Klopp.

Managers confronting officials at half-time or after a game is commonplace in 2021 and Hackett has referenced the Liverpool boss as a serial offender.

“First of all, I'm very clear that managers should not be allowed to come onto the field of play at the end of the game. Stop them coming on," Hackett told Football Insider.

“Allow them to knock on the referee's door 30 minutes after the game to seek clarification. If they're not happy with the referee's explanation they can talk to the match delegate and explain their frustration and put it in a written report. All they have to do is write.

“The shareholders of the Premier League are the clubs. If they've got a concern there is an avenue in which they can write to the Premier League and say 'Look we have a concern with this particular area'."

Hackett added: "It might be great that Klopp runs down the touchline but why do we have a technical area?

"Why do we have a procedure in place that says you stay in your technical area? Yet we don't apply it.

"To some degree, fourth officials are weak and are ignoring it. Sometimes, it's not what he says, it's how he communicates.

"I think the FA might want to write him a four-page letter explaining his misdemeanours and that we want an improvement in his behaviour. A shot across the barrel."