The 26 teams given direct entry to the group stage will be joined by the six winners of the play-off ties which conclude on Wednesday.
The teams will be split into four seeding pots. Pot one consists of the holders, the UEFA Europa League winners and the champions of the six highest-ranked nations. Pots two to four are determined by the club coefficient rankings.
No team can play a club from their own association, with the exact draw procedure to be confirmed before the ceremony.
The draw also establishes the groups for the UEFA Champions League path of the UEFA Youth League.
Bellow are the pots and how teams are seeded:
Pot 1
Chelsea, Liverpool, Manchester City, Barcelona, Juventus, Bayern Munich, Zenit St Petersburg, PSG
Pot 2
Real Madrid, Atletico Madrid, Borussia Dortmund, Napoli, Shakhtar Donetsk, Benfica, Tottenham Hotspur
Pot 2 or 3
Lyon
Pot 2, 3 or 4
Ajax (0) or APOEL (0).
Pot 3
Bayer Leverkusen, Red Bull Salzburg, Valencia, Inter, Krasnodar (0) or Olympiacos (4).
Pot 3 or 4
Lokomotiv Moscow, Genk, Bruges (1) or Linz (0), Rosenborg (0) or Dinamo Zagreb (2), Red Star Belgrade (2) or Young Boys (2).
Pot 4
Galatasaray, Leipzig, Atalanta, Lille, Slavia Prague (1) or Cluj (0).
The final six qualifiers conclude on Tuesday and Wednesday. First leg scores are in brackets.
