United will be up against one of holders Bayern Munich, Juventus, PSG, Porto, Real Madrid, Sevilla or Zenit St Petersburg when the group-stage draw is made in Athens on 1 October.
The Reds are unable to face the other top seed, Liverpool, due to UEFA restrictions on sides from the same country playing each other.
After 77,000 votes were cast across the week - more than an Old Trafford attendance - we can now reveal that Russian champions Zenit are your preferred opponent, with the 2008 UEFA Cup winners receiving 29 per cent of the vote in our poll.