The UEFA Champions League group stage draw is out with English Champions Manchester City drawing Paris Saint-Germain in group A with RB Leipzig, Club Brugge.
Chelsea – who beat Manchester City in last season’s final to lift their second Champions League trophy – will play Italian team Juventus, as well as Russian champions Zenit and Swedish champions Malmo.
Liverpool have been drawn into a tough Group B, where they will take on three-time runners-up Atletico Madrid, seven-time winners AC Milan and two-time winners Porto.
Manchester United will face a rematch with Villarreal, who beat them on penalties in the final of last season’s UEFA Europa League. Also in Group F are Atalanta and Swiss champions Young Boys.
Bayern Munich and Barcelona – who have won 11 Champions Leagues between them – headline Group E. Barcelona will be competing in the competition without Messi for the first time in 17 years.
Also in Group E are Benfica and Ukrainian title-winners Dynamo Kiev.
Real Madrid – who have won the competition a record 13 times – will take on Italian champions, as well as Shakhtar Donetsk and Sheriff Tiraspol, who are the first Moldovan side to compete in the Champions League.
Group C contains Portuguese champions Sporting, Borussia Dortmund, four-time Champions League winners Ajax and Besiktas.
In Group G, French title-winners Lille face Sevilla, Austrian champions Red Bull Salzburg and Wolfsburg.
Champions League group-stage draw
Group A: Manchester City, Paris Saint-Germain, RB Leipzig, Club Brugge
Group B: Atletico Madrid, Liverpool, Porto, AC Milan
Group C: Sporting, Borussia Dortmund, Ajax, Besiktas
Group D: Inter Milan, Real Madrid, Shakhtar Donetsk, Sheriff Tiraspol
Group E: Bayern Munich, Barcelona, Benfica, Dynamo Kiev
Group F: Villarreal, Manchester United, Atalanta, Young Boys
Group G: Lille, Sevilla, Red Bull Salzburg, Wolfsburg
Group H: Chelsea, Juventus, Zenit, Malmo
When will the matches be played?
Matchday one: September 14/15
Matchday two: September 28/29
Matchday three: October 19/20
Matchday four: November 2/3
Matchday five: November 23/24
Matchday six: December 7/8