The refereeing appointments for the Semi-Finals of the 2017-18 William Hill Scottish Cup have been confirmed.
Motherwell v Aberdeen
Referee: Kevin Clancy
Assistants: Douglas Ross, David Roome
Additional Assistants: Andrew Dallas, Alan Muir
Fourth Official: Greg Aitken
Celtic v Rangers
Referee: Bobby Madden
Assistants: David McGeachie, Graeme Stewart
Additional Assistants: Don Robertson, Nick Walsh
Fourth Official: Steven McLean