Referee appointments for this weekend's games in the Ladbrokes Premiership and the SPFL play-offs.
Ladbrokes Premiership - Friday
Aberdeen v Celtic - Steven McLean (BT Sport, 7.45pm)
Ladbrokes Premiership play-off quarter-final, 2nd leg - Friday
Dundee United v Morton - Andrew Dallas
Ladbrokes Premiership - Saturday
Dundee v Ross County - Nick Walsh
Hamilton Academical v Motherwell - Kevin Clancy
Kilmarnock v Inverness Caley Thistle - John Beaton
Rangers v Heart of Midlothian - Bobby Madden (Sky Sports, 12.15pm)
St Johnstone v Partick Thistle - Stephen Finnie
Ladbrokes Championship play-off semi-finals, 2nd leg - Saturday
Alloa Athletic v Airdrieonians - Barry Cook
Raith Rovers v Brechin City - Alan Muir
Ladbrokes League 1 play-off semi-finals, 2nd leg - Saturday
Forfar Athletic v Annan Athletic - John McKendrick
Peterhead v Montrose - Steven Kirkland
Ladbrokes League 2 play-off final, 1st leg
East Kilbride v Cowdenbeath - Gavin Duncan
