Man Utd have a not too hard Champions League group in with Bayer Leverkusen, Real Sociedad and Shakhtar Donetsk.
Celtic have an awkward group with Barcelona, AC Milan and Ajax.
Chelsea have the easiest group of them all with Schalke, Basle and Steaua Bucharest.
Man City drawn with holders Bayern Munich, CSKA Moscow and Viktoria Plzen.
Arsenal drew the short straw lumped in with Borussia Dortmund, Napoli and Marseille.