There will be a heavy Spanish presence in the Champions League draw later as for the first time, one country has five teams in the group stage.
Barcelona will be among the first seeds as League winners, and will also be the subject of a special tribute before the draw takes place.
The Catalans will be acknowledged for winning their fifth European Cup in beating Juventus in June, as part of what so far is a quadruple – with the Copa del Rey, League title and UEFA Super Cup following.
Real Madrid, Atletico Madrid and play-off winners Valencia will be three of the teams in the second pot, along with the likes of Arsenal, Manchester City and Porto.
Sevilla, qualifiers for the Champions League by virtue of their Europa League victory, are in Pot 3, joining Roma, Lyon and Olympiacos, among others.
Pot 4 contains Borussia Monchengladbach and Wolfsburg, as well as Astana, the first Kazakh club to reach the group stage.
The draw begins at 4.45pm UK time, and none of the Spanish teams can be drawn against each other as country protection remains in force for the group stage.
Pot 1
Barcelona
Bayern Munich
Chelsea
Benfica
Paris Saint-Germain
Juventus
Zenit St Petersburg
PSV Eindhoven
Pot 2
Real Madrid
Atletico Madrid
Porto
Arsenal
Manchester United
Valencia
Manchester City
Bayer Leverkusen
Pot 3
Shakhtar Donetsk
Sevilla
Dynamo Kiev
Olympiacos
CSKA Moscow
Galatasaray
Roma
Pot 4
BATE Borisov
Borussia Monchengladbach
Wolfsburg
Dinamo Zagreb
Maccabi Tel Aviv
Gent
Malmo
Astana
