Referee appointments for the Betfred Cup quarter-finals on September 20-22 have now been confirmed.
Tuesday September 20
Morton v Dundee United - Andrew Dallas
Kick-off 7.45pm
Tuesday September 20
Rangers v Queen of the South - Don Robertson
Live on BT Sport, kick-off 7.45pm
Wednesday September 21
Celtic v Alloa Athletic - Alan Muir
Live on BT Sport, kick-off 7.45pm
Thursday September 22
Aberdeen v St Johnstone - Craig Thomson
Live on BT Sport, kick-off 7.45pm
