Alashkert FC
AS Monaco
Benfica
Bodo/Glimt
Borac Banja Luka
Brondby
BSC Young Boys
Celtic
CFR Cluj
Connah's Quay
Dinamo Tbilisi
Dinamo Zagreb
FC Midtylland
FC Prishtina
FC Sheriff Tiraspol
Ferencvaros
FK Buducnost
FK Zalgiris Vilnius
Flora Talinn
Fola Esch
Folgore
Galatasaray SK
HB Torshavn
Hibernians FC
HJK Helsinki
Inter Club d'Escaldes
Kairat
KF Shkendija
KRC Genk
KS Teuta
Legia Warsaw
Lincoln Red Imps
Linfield
Ludogorets Razgrad
Maccabi Haifa
Malmo FF
Mura 05
Neftchi Baku
Olympiakos
Omonia Nicosia
PSV Eindhoven
Rangers
Rapid Wien
Red Star Belgrade
Riga FC
Salzburg
Shakhtar Donetsk
Shakter Soligorsk
Shamrock Rovers
Slavia Prague
Slovan Bratislava
Sparta Prague
Spartak Moscow
Valur
| Red | Clubs | VS Club | Date | Sections | |
|---|---|---|---|---|---|
| 1 | Benfica | PSV Eindhoven | 24-08-2021 | Play Off Round | Match details |
| 1 | Ferencvaros | BSC Young Boys | 24-08-2021 | Play Off Round | Match details |
| 1 | BSC Young Boys | Ferencvaros | 18-08-2021 | Play Off Round | Match details |
| 1 | Red Star Belgrade | FC Sheriff Tiraspol | 03-08-2021 | Third round | Match details |