Last updated on .From the section Premier League

How does VAR work?

Some decisions that go to the video assistant referee are to be shown on big screens at Premier League grounds.

Graphics will explain any VAR-related delay to a match, and any overturned decision, from next season.

Any video clip which helps explain an overturned decision will be broadcast, and they could potentially be viewed via an app on mobile phones.

Messages on scoreboards and PA announcements will be made at grounds which do not have giant screens.

VAR checks will be for "clear and obvious errors" relating to four match-changing situations: goals, mistaken identity, red cards and incidents in the penalty area.

It debuts in the Premier League next season, having been used at the 2018 World Cup, in this season's Champions League knockout stages and in selected FA Cup and Carabao Cup ties.

For clubs that do not have giant screens in their stadium, VAR communications will be made via a combination of PA announcements and messages on scoreboards.

"If the VAR believes there is a definitive video clip which helps explain an overturned decision to fans, it will be broadcast on giant screens," the Premier League said in a statement.

The Premier League says it is also looking at ways for supporters to view the clips on handheld devices via an app.

Meanwhile, the Premier League and seven leading Spanish sides have reiterated their opposition to the proposal to a radical restructure of European club football.

Championed by Juventus president Andrea Agnelli, the idea is to replace Uefa's current club competitions with a three-tier structure that incorporates promotion and relegation - a move that would limit the number of Champions League slots available to new entrants via domestic competition.

This would also involve increasing the number of games that Champions League teams play against each other by moving to four groups of eight - which many domestic leagues believe could only be achieved by playing European games at weekends.

What is VAR?