Bayern Munich will begin the defence of their UEFA Champions League title in a group containing CSKA Moscow, Manchester City and Viktoria Plzen,
Last year's losing finalists Borussia Dortmund have been paired with Arsenal, Marseille and Rafael Benitez's Napoli.
Manchester United face a trip to Ukraine to face Shakhtar Dontesk, with Bayer Leverkusen and Real Sociedad making up a tricky assignment in David Moyes' debut in the competition.
Chelsea's return to the Champions League will come against Schalke 04, FC Basel and Steaua Bucharest.
Celtic's reward for qualification is arguably the group of death, with Barcelona, AC Milan and Ajax helping to form a group made up entirely of former winners.
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