Celtic boss Ange Postecoglou heads into Sunday's Scottish Cup Easter Sunday showdown with Rangers hoping to keep the men from Glasgow's East End treble dream alive and intact.

It's 21 years since Northern Irishman Martin O'Neill completed a domestic clean sweep in his inaugural season in charge of Celtic.

Back in 2000, Celtic finished some 21 points behind Rangers before claiming the lot. O'Neill labelled Rangers the benchmark back then but how things have changed.

The Aussie's side is currently six points clear in the Scottish Premiership title race with the five split games to come. It's part two of the league and Scottish Cup trilogy with first blood to Celtic having already tasted success at Ibrox two weeks ago.

READ MORE: The Celtic treble tie that binds Ange Postecoglou and Martin O'Neill - Tony Haggerty

Will Postecoglou make it third time lucky at Hampden Park and keep up his 100 per cent win rate at the national stadium?

Former Celtic striker Chris Sutton believes that if Postecoglou can guide Celtic to the hat-trick of trophies it would eclipse the achievement of O'Neill's side.

If the 56-year-old can pulls off a supposed mission impossible then it would be Celtic's eighth treble in their history and fifth in six years.

Join Alison McConnell and Tony Haggerty on the video as they discuss all the big Celtic talking points...