Group stage qualifiers (16 teams)
Lyon (France), Marseille (France), Stuttgart (Germany), Schalke 04 (Germany), Olympiakos (Greece), Manchester United (England), Chelsea (England), AC Milan (Italy), Inter (Italy), Roma (Italy), PSV Eindhoven (Holland), Porto (Portugal), Sporting Lisbona (Portugal), CSKA Moscow (Russia), Real Madrid (Spain), Barcelona (Spain).
Third qualifying round (18 teams)
Anderlecht (Belgium), Toulouse (France), Werder Bremen (Germany), AEK Athens (Greece), Liverpool (England), Arsenal (England), Lazio (Italy), Ajax (Holland), Benfica (Portugal), Sparta Prague (Czech Republic), Dinamo Bucharest (Romania), Zenit Saint Petersburg (Russia), Celtic (Scotland), Seville (Spain), Valencia (Spain), Zurich (Switzerland), Fenerbahce (Turkey), Dinamo Kiev (Ukraine).
Second qualifying round (14 teams)
Salzburg (Austria), Genk (Belgium), Levski Sofia (Bulgaria), FC Copenhagen (Denmark), Beitar Jerusalem (Israel), Rosenborg (Norway), Zaglebie Lubin (Poland), Slavia Prague (Czech Republic), Steaua Bucharest (Romania), Rangers (Scotland), Red Star Belgrade (Serbia), Besiktas (Turkey), Shakhtar Donetsk (Ukraine), Debrecen (Hungary).
First qualifying round (28 teams)
SK Tirana (Albania), Rangers FC (Andorra), Pyunik Yerevan (Armenia), Khazar Lenkoran (Azerbaijan), Bate Borisov (Belarus), FK Sarajevo (Bosnia-Herzegovina), Apoel Nicosia (Cyprus), Dinamo Zagreb (Croatia), Levadia Tallinn (Estonia), The New Saints (Wales), Olimpi Rustavi (Georgia), HB Torshavn (Faroe Islands), Tampere United (Finland), Derry City (Ireland), Linfield (Northern Ireland), FH Hafnarfjardar (Iceland), Fk Astana (Kazakhstan), Dudelange (Luxembourg), FK Ventspils (Latvia), FBK Kaunas (Lithuania), Pobeda Prilep (Macedonia), Marsaxlokk (Malta), Sheriff Tiraspol (Moldova), Zeta Golubovci (Montenegro), Murata (San Marino), Msk Zilina (Slovakia), Nk Domzale (Slovenia), IF Elfsborg (Sweden).