Arsenal, Manchester City, Liverpool, Aston Villa and Manchester United find out their league phase opponents. 

Arsenal: 

Real Madrid (H)

Bayern Munich (A)

Borussia Dortmund (H) 

Real Betis (A)

Lille (H)

Napoli (A) 

Sabah (H) 

Slavia Praha (A) 

Manchester City:

PSG (H) 

Barcelona (A) 

Sporting Lisbon (H) 

Porto (A) 

Napoli (H) 

RB Leipzig (A) 

AEK Athens (H) 

Lens (A) 

Liverpool:

Atletico Madrid (H) 

Inter Milan (A) 

Porto (H) 

Club Brugge (A)

Villarreal (H) 

Fenerbahce (A)

Lens (H) 

LASK (A)

Aston Villa:

PSG (H) 

Barcelona (A) 

Borussia Dortmund (H)   

Club Brugge (A) 

Fenerbahce (H) 

Galatasaray (A) 

Viking (H) 

Slavia Praha (A) 

Manchester United:

Bayern Munich (H) 

Atletico Madrid (A) 

Roma (H) 

Sporting Lisbon (A)

RB Leipzig (H) 

Villarreal (A) 

Sabah (H) 

Como (A) 

The exact dates for these fixtures will be confirmed in due course, but the matches will take place across these dates:

MW1: September 8-10

MW2: October 13-14

MW3: October 20-21

MW4: November 3-4

MW5: November 24-25

MW6: December 8-9

MW7: January 19-20

MW8: January 27