The group stage draw for the 2018-19 Champions League occurred on Thursday. 

Group A: Atletico Madrid, Borussia Dortmund, Monaco, Club Brugge

Group B: Barcelona, Tottenham Hotspur, PSV Eindhoven, Inter Milan

Group C: Paris Saint-Germain, Napoli, Liverpool, Red Star Belgrade

Group D: Lokomotiv Moscow, Porto, Schalke, Galatasaray

Group E: Bayern Munich, Benfica, Ajax, AEK Athens

Group F: Manchester City, Shakhtar Donetsk, Lyon, Hoffenheim

Group G: Real Madrid, Roma, CSKA Moscow, Viktoria Plzen

Group H: Juventus, Manchester United, Valencia, Young Boys

UEFA is considering the possibility of adding Video Assistant Referee's in the Champions League.

The technology could be introduced in time for the quarterfinals this season.

The VAR system is already used in several top-flight leagues around the world and was used at the 2018 World Cup finals in Russia.

"UEFA is constantly looking at ways in which it can improve its competitions and we are looking closely at the implementation of video assistant referees that are currently being trialled in various competitions," an official statement from European football's governing body read.