Champions League holders Barcelona and Premier League champions Chelsea will renew their rivalry after they were drawn together in the first phase of this year’s competition.
The two sides, who have met for the last two years, also face Werder Bremen and Levski Sofia.
Last year’s finalists Arsenal take on Porto, CSKA Moscow and Hamburg while 2005 winners Liverpool face PSV Eindhoven, Bordeaux and Galatasaray.
Milan, who were originally left out of the competition for their part in the Italian match-fixing scandal, have been drawn to face Lille, AEK Athens and Anderlecht.
Real Madrid coach Fabio Capello, whose former club Juventus were omitted from this year’s competition for their role in the scandal, will meet Lyon, Dynamo Kyiv and Steaua Bucharest.