Irvine claimed: “It was a game-changing incident. I spoke to Craig after the game and he seemed relieved. It was so early in the game and would have changed things had they lost a man at that point.
“I saw him coming and he was always going to bring me down when I knocked the ball past him.
“You can look at it in different ways but, for me, if he hadn’t come off his line I would have one-on-one with the goalkeeper.
“The fact he came out and halted me was a denial of a goalscoring opportunity and a red card. That’s my view, but not everyone agrees.
“For the referee, it was flag day at Parkhead and it’s a big decision to make in front of the home crowd. But I still think Craig should have had the red card.”