Kevin Clancy will take charge of Saturday’s top of the table clash between Celtic and Rangers. But just as much focus will be on Nick Walsh, who’s been appointed as VAR and will be Clancy's eye in the sky when the two do battle at Parkhead.
Ange Postecoglou has challenged his players to win every remaining game and set a Premiership points record, and they can go 12 points clear of their rivals with a win at the weekend.
Rangers’ hopes of denying the Hoops a second successive league crown are slim, but a victory in their neighbours’ backyard would cut the gap to six points and at least make things slightly more interesting with another meeting of the two to come at Ibrox after the split.
However, the Gers record across town isn't great, having won just 6 from 36 games played at Celtic Park since the turn of the century.