Chris Sutton has slated Willie Collum for his VAR intervention during Hearts vs Celtic this afternoon.
The whistler, who is in charge of the video technology for the game instructed referee Nick Walsh to review his decision to book Alex Cochrane for a challenge on Daizen Maeda.
After viewing the incident again, Walsh decided to change his card to red due to the challenge being deemed as a last-man attempt.
Sutton fumed over the decision, saying on Twitter: "That’s not a red card… Willie Collum in the VAR hut has absolutely pooped it…"
Meanwhile, Postecoglou knows his team will have to work hard to gain three points to win the Premiership title at Tynecastle.
“This group of players have experienced this kind of build-up to a big game over the last 20 months and were in this position last year and have had a couple of semi-finals and finals,” he said.
“They know there is a bit of hype and excitement around these big games and they know there’s outcomes that can be pretty special at the end of it, but they have been pretty focused on just playing our football.
“They are human beings, they know what’s at stake and they know what the potential of a positive result is.
“They will take that into the game but they will still be clear on how we play our football and it’s a difficult place to play.
“Hearts have still got a lot to play for so the beauty of it is if we do do it we will have to earn it and that’s the only way you want to do it.”