The fourth-round tie between East Kilbride and Lothian Thistle has taken on extra significance after Celtic were drawn as next-round opponents.
The Scottish champions will head to the home of whichever of the minnows prevails in their postponed clash, with the tie sure to be a big payday for the victor.
East Kilbride currently have no fixed home ground and play in the Lowland League, while Lothian play in the East of Scotland Premier League.
Rangers will face Scottish Premier League opposition with Kilmarnock going to Ibrox, while Motherwell meet the winner of Stirling Albion and Inverness.
Dundee United host Partick, Dunfermline or Ross County will meet Linlithgow or Forfar while Annan face Greenock Morton.
Dundee and Falkirk play for the right to go to Dumbarton.
The ties will be played on the weekend of 6-7 February.