Follow this rolling blog as the draw for the 2013/2014 UEFA Champions League group stage unfolds in Monaco. Times are BST. Refresh the page for the latest updates...
17:36 Final update: Group C - Benfica, PSG, Olympiacos, Anderlecht; Group H - Barcelona, AC Milan, Ajax, Celtic; Group E - Chelsea, Schalke, Basel, Steaua Bucharest; Group B - Real Madrid, Juventus, Galatasaray, FC Copenhagen; Group D - Bayern Munich, CSKA Moscow, Manchester City, Viktoria Plzen; Group G - Porto, Atletico Madrid, Zenit St Petersburg, Austria Vienna.
17:34 Group F is a tough one as Serie A runners-up Napoli join Arsenal, Marseille and Borussia Dortmund. United's final opponents are Basque outfit Real Sociedad.
17:32 The fourth and final pot will be drawn by another famous face from the past - Paulo Sousa.
17:29 The other groups are now: Group G - Porto, Atletico Madrid, Zenit St Petersburg; Group H - Barcelona, AC Milan, Ajax; Group D: Bayern Munich, CSKA Moscow, Manchester City; Group F - Arsenal, Marseille, Borussia Dortmund.
17:28 The Bundesliga club defeated United in the 2001/2002 semi-finals and the two sides also met the following season in the competition.
17:28 Bayer Leverkusen will join the Reds in Group A along with Shakhtar Donetsk.
17:25 Here's the latest update: Group E - Chelsea, Schalke, Basel; Group C - Benfica, PSG, Olympiacos; Group B - Real Madrid, Juventus, Galatasaray.
17:23 Michael Owen, the 2001 European Footballer of the Year, takes his place on stage ready to assist with the next