The officials for this weekend's powderkeg derby between Celtic and Rangers have been named.
Willie Collum will be the man in charge of the fixture which could go a long way to determining the outcome of this season's league title.
Just three points separate the teams with as many games of the Premiership campaign remaining.
The teams will meet at Celtic Park on Saturday lunchtime in what is sure to be a drama-filled afternoon in Glasgow.
READ MORE: Jack Butland filmed arguing with Rangers fan after win
Collum will be supported by David McGeachie and Ross Macleod as his assistants, meanwhile, Steven McLean has been selected to be on VAR duty.
Graeme Stewart is the assistant VAR, while Don Robertson will try to keep a lid on things on the touchline as the fourth official.
John Beaton had his hands full during the last meeting between the teams on April 7. That game finished 3-3 at Ibrox.
The appointment comes just a matter of months on from Rangers' sentiments regarding Collum and his involvement in their games.
The Ibrox club was left unhappy with the experienced referee after his performance on VAR during the last derby encounter between the teams at Celtic Park on December 30 of last year.
They were left fuming over the failure of VAR to advise referee Nick Walsh to award Rangers a penalty during the 2-1 loss after an Alistair Johnston handball.
It later emerged that Abdallah Sima was offside, and so, that was the reason Collum dismissed the case.
Regardless though, Rangers were left furious over the handling of the situation and the club requested with the Scottish FA that he should not officiate Rangers matches moving forward.
READ MORE: Rangers player embroiled in heated 'fight' with fan outside stadium
Unsurprisingly, this was dismissed by Crawford Allan, the head of refereeing and Collum was placed in charge of Rangers' Scottish Cup clash against Ayr United in early February.
Philippe Clement commented at the time: "I'm happy to be honest. We can leave this story behind us.
"When there's one moment I think a referee isn't neutral I would quit my job, so I'm happy we can leave the past behind.
"For me there was a fault made, it was a clear handball but I'm also not without fault. I make fault every day probably.
"I don't look at people and if they make a mistake they are dead for life or something. No, this is a new game, new situation.
"It's important not to live in the past. I don't want my players also to be living in the past about the last few weeks or months. It's about the next game and performing there.
"And if we make mistakes, you expect to get new chances to prove that you've become better. I'm in that way into life."
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