Willie Collum has been named as the referee for the Scottish Cup semi-final between Rangers and Celtic.
The whistler has been selected as the man in the middle for the powderkeg clash at the national stadium.
Collum will be assisted by linesmen Daniel McFarlane and Dougie Potter with Don Robertson the fourth official.
Steven McLean is the VAR official with Frank Connor the assistant VAR.
This weekend will be Collum's first time in charge of a match between the Glasgow rivals this season.
Nick Walsh was in charge for Celtic's 4-0 win in September last year and John Beaton was the man with the whistle in the 2-2 draw at the start of the year.
Walsh was again the official in the Viaplay Cup final meeting with Celtic victorious and Kevin Clancy was referee in the 3-2 win for Celtic earlier this month.
Kick-off in the Scottish Cup semi-final is at 1.30pm on Sunday, April 30.
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