It's another trip to the Borders for United if they can get past Gretna tomorrow night.
Aberdeen v Inverness Caledonian Thistle
Ross County or Airdrie United v Clyde
Queen of the South v Gretna or Dundee United
Ayr United or Stranraer v St Mirren
Partick Thistle or Hearts v Kilmarnock
Alloa Athletic v Livingston or Morton
East Fife or Dunfermline Athletic v Celtic
Hibernian v Brechin City
Ties to be played on 5/6 February.