The ballot will take place at New Douglas Park following Hamilton's game against Rangers. Lanarkshire rivalries will be set aside for an hour and a half as Motherwell fans wish their neighbours the best of luck against the holders.
Only five of Saturday's fourth round games survived the freeze and that will result in a complicated look to Sunday's draw. It will be live on $ky Sports and on Radio Scotland and should take place sometime after 2.15pm.
The sixteen balls will represent the following :-
Inverness or Motherwell
Raith Rovers or Airdrie United
Ayr United or Brechin City
Forfar or St Johnstone
Morton or Celtic
Albion Rovers or Stirling Albion
Edinburgh City or Montrose
Ross County or Inverurie
Kilmarnock or Falkirk
Livingston or Dundee
Hamilton or Rangers
Dundee United
Hibernian
Dunfermline
Aberdeen
St. Mirren