Speaking exclusively to Football Insider, the ex-Fifa and Premier League referee claimed Nick Walsh is on “top form” and his handling of the incident was “textbook”.
Kane kicked the ball at Carter-Vickers after he won the ball after a coming together between the two.
Tempers flared after the incident and it led to a “mass confrontation” between players from both sides.
Walsh dished out yellow cards to both Kane and Carter-Vickers.
As quoted by the Daily Record, Ange Postecoglou questioned why Carter-Vickers was cautioned.
“I think this referee is in top form, I like his style, I like his motivation,” Hackett said after analysing the footage with Football Insider correspondent Connor Whitley.
“He’s in quickly, he’s blown and he’s handled it very well. I think he’s right, a double yellow. It’s a bit of a mass confrontation. Well done to him.
“I keep saying it, and I know referees in Scotland get criticised, but I think he’s handled that absolutely to the textbook.
“He’s close at hand. I don’t think there’s been a kick out of malice. There’s a ball around.
“I’m supporting the double yellow, I’m supporting a good bit of refereeing with common sense.”
Carter-Vickers has now been cautioned in his last two Scottish Premiership games and has four yellow cards across all competitions for Celtic.
The eight-time United States international has now played 10 games across all competitions for the Hoops since his summer move from Tottenham.
This article was originally posted here