Manchester United and Bayern Munich are in Group A of this year’s Champions League.
The draw for the group stage was conducted on Thursday in Monaco.
Reigning champions Manchester City start their defence in Group G where they will face RB Leipzig, Red Star Belgrade and Young Boys.
Arsenal will play Europa League winners Sevilla, PSV and Lens.
GROUP STAGE DRAW
Group A – Bayern Munich, Man Utd, Copenhagen, Galatasaray
Group B – Sevilla, Arsenal, PSV, Lens
Group C – Napoli, Real Madrid, Braga, Union Berlin
Group D – Benfica, Inter, RB Salzburg, Real Sociedad
Group E – Feyenoord, Atletico Madrid, Lazio, Celtic
Group F – PSG, Borussia Dortmund, AC Milan, Newcastle
Group G – Man City, RB Leipzig, Red Star Belgrade, BSC Young Boys
Group H – Barcelona, Porto, Shakhtar Donetsk, Royal Antwerp