If there is one side who know how roll in Glasgow's east end it's Morton - their fans still remember 2013 vividly.
Dougie Imrie, scorer of that famous penalty that sent Neil Lennon's Hoops packing from the League Cup, is now in the dugout for the Greenock men and they'll take their eye off their Premiership promotion hopes for a crack at Ange Postecoglou's Premiership champions.
More than 2,000 Morton fans have snapped up tickets as they hope for an almighty upset that would send shockwaves through the competition but it won't come easy for them against the runaway league leaders who are flying after hammering Morton's rivals St Mirren 4-0 during the week. Celtic already got a measure revenge against the Ton with Moussa Dembele and Odsonne Edouard securing a comfortable quarter-final win in 2018 and they'll be looking for another handsome victory on Saturday.
