VAR will make its Champions League debut on Tuesday, in Manchester United’s home encounter with Paris Saint-Germain and in Roma’s hosting of Porto in the first leg of the last 16.
The technology is now well established at the top level of the game and is in place in many of the biggest competitions around the world, including the Bundesliga, Serie A and Ligue 1, while it was also used during the 2018 World Cup in Russia.
The Champions League has adopted it for the first time for the knockout stages, with the UEFA Executive Committee having voted for its inclusion during a meeting in December 2018.