The seven-time European champions will compete with Pompey, Wolfsburg (Germany), Heerenveen (Holland) and Sporting Braga (Portugal).
A tough Group F will see Bundesliga leaders Hamburg clashing with Ajax Amsterdam, Aston Villa and Czech champions Slavia Prague.
The group stage will kick off on October 23rd
The Groups
Group A
Schalke (Germany)
Paris Saint-Germain (France)
Manchester City (England)
Racing Santander (Spain)
FC Twente (Netherlands)
Group B
Benfica (Portugal)
Olympiakos (Greece)
Galatasaray (Turkey)
Hertha Berlin (Germany)
Metalist Kharkiv (Ukraine)
Group C
Sevilla (Spain)
VfB Stuttgart (Germany)
Sampdoria (Italy)
Partizan Belgrade (Serbia)
Standard Liege (Belgium)
Group D
Tottenham (England)
Spartak Moscow (Russia)
Udinese (Italy)
Dinamo Zagreb (Croatia)
NEC Nijmegen (Netherlands)
Group E
AC Milan (Italy)
SC Heerenveen (Netherlands)
Braga (Portugal)
Portsmouth (England)
Wolfsburg (Germany)
Group F
Hamburg (Germany)
Ajax (Netherlands)
Slavia Prague (Czech Republic)
Aston Villa (England)
MSK Zilina (Slovakia)
Group G
Valencia (Spain)
FC Brugge (Belgium)
Rosenborg (Norway)
FC Copenhagen (Denmark)
Saint-Etienne (France)
Group H
CSKA Moscow (Russia)
Deportivo La Coruna (Spain)
Feyenoord (Netherlands)
Nancy (France)
Lech Poznan (Poland)