Kris Commons believes Celtic can land a knockout blow in the title race at Ibrox on Sunday.
The Old Firm clash between the Hoops and Rangers could be pivotal with just seven games remaining.
Ange Postecoglou's side would move six points clear at the top of the Premiership table with a win over their arch rivals.
Commons believes a Celtic win could inflict 'psychological damage' on Giovanni van Bronckhorst's side and it would result in Postecoglou lifting the trophy in May.
"It's not just the fact that Celtic would go six points clear. There are a few different things you have to consider in all of this," Commons told the Daily Mail.
"It's the psychological damage they could inflict on Rangers if they were to beat them on their own patch on the back of that Celtic Park annihilation.
"There's also the fact that Rangers are still juggling their domestic ambitions with trying to make further progress in the Europa League.
"Even beyond next week's game, I still feel there's a vulnerability to this Rangers team domestically and I sense that they could drop more points from now until the end of the season.
"I don't get that same impression from Celtic at the moment. They look extremely slick and well-drilled. Postecoglou has created an animal.
"If they do go on and become champions, I feel it would rank as one of the sweetest league titles in Celtic's history, given the shambles the club were in last summer."
"For Rangers, it's a game they simply cannot afford to lose as they look to defend their title.
"Giovanni van Bronckhorst is an experienced operator. He knows how things work in Glasgow and he knows the pressure that he and his players will be under on Sunday to right the wrongs of the defeat at Celtic Park last month.
"I expect Rangers to go full throttle and try to unsettle Celtic in the early part of the match. Their fans will demand them to get on the front foot.
"It will be a big test for the Celtic defence and the likes of Carl Starfelt and Cameron Carter- Vickers. They have both improved steadily as the season has gone on.
"But, particularly in European games, Celtic have been exposed at the back too easily. Rangers will look to play on that and maybe plant some doubts into their minds again."
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