VAR will be used in the Premier League next season — but its introduction is a headache for both Manchester United and Liverpool.

The unanimous vote by the 20 clubs to use the technology came after a series of high-profile mistakes by officials this term.

But the lack of giant screens at Old Trafford and Anfield means Prem chiefs must find a way of explaining VAR calls to supporters in both stadiums.

Fans at Liverpool’s FA Cup tie with West Brom last term were left bemused by a series of VAR reviews without explanations.

Video screens cannot be installed without obscuring at least some pitch views from the seats at both grounds. Prem chiefs will discuss action with the clubs ahead of the introduction of the technology in August.

A Premier League source said: “We do not want to force United or Liverpool to put up screens but there have to be discussions over how the fans will be informed.”

The decision comes just six months after clubs vetoed VAR after issues during trials in the two domestic cups.

But clear and costly errors in the Prem and Champions League this season brought about a change of heart from English clubs.

This season Professional Game Match Officials chiefs have run “non-live” multi-game trials during the Saturday 3pm games at their London base.

Confirming the decision to carry on testing ahead of bringing in VAR next year, the Premier League said: “There will be a continued emphasis on those Saturday afternoons and developing a clear protocol for communicating VAR decisions to fans.”