| Austria (4) |
|---|
| LASK Linz, | | Rapid Wien, | | Red Bull Salzburg, | | Wolfsberger AC, |
| | | Belgium (4) |
|---|
| AA Gent, | | Club Brugge, | | Royal Antwerp FC, | | Standard Liège, |
| | Bulgaria (2) |
|---|
| CSKA Sofia, | | Ludogorets, |
|
| Croatia (2) |
|---|
| Dinamo Zagreb, | | NK Rijeka, |
| | Cyprus (1) |
|---|
| Omonia Nicosia, |
| | Czech Republic (3) |
|---|
| Slavia Praha, | | Slovan Liberec, | | Sparta Praha, |
| | England (4) |
|---|
| Arsenal, | | Leicester City, | | Manchester United, | | Tottenham Hotspur, |
|
| France (2) |
|---|
| Lille, | | Olympique Nice, |
| | Germany (2) |
|---|
| Bayer Leverkusen, | | Hoffenheim, |
| | Greece (3) |
|---|
| AEK Athens, | | Olympiacos Piraeus, | | PAOK FC, |
| |
| Israel (2) |
|---|
| Hapoel Beer-Sheva, | | Maccabi Tel Aviv, |
| | Italy (3) |
|---|
| AC Milan, | | AS Roma, | | Napoli, |
| | Netherlands (4) |
|---|
| Ajax, | | AZ, | | Feyenoord, | | PSV, |
| |
| | Portugal (2) |
|---|
| Benfica, | | Sporting Braga, |
| | | Russia (2) |
|---|
| CSKA Moskva, | | FC Krasnodar, |
|
| Scotland (2) |
|---|
| Celtic, | | Rangers FC, |
| | | Spain (3) |
|---|
| Granada, | | Real Sociedad, | | Villarreal, |
| | Switzerland (1) |
|---|
| Young Boys, |
|
| | Ukraine (3) |
|---|
| Dynamo Kyiv, | | Shakhtar Donetsk, | | Zorya Luhansk, |
|