United are favourites to go through and to end Arsenal's interest in a third competition in two weeks, with the Gunners also carrying the curse of Clarets Mad.
Warrington Town remain our only winners in eleven ties so far this season; they beat Bamber Bridge in the second round qualifying, and that losing streak continued in the last round as Leyton Orient took a hammering in a replay at the Emirates.
Now the biggest two clubs remaining in the competition go head to head tomorrow at Old Trafford with kick off.