Ally McCoist insists he'll "never forget" Dundee United 's opposition to Rangers' being re-admitted to the old SPL.
But the Ibrox legend concedes it's time for the two rivals to bury the hatchet of 2012.
McCoist was Rangers boss when 10 top-flight teams railed against the club being granted a place in the division following liquidation eight years.
Many Rangers fans felt then-Tannadice chairman Stephen Thompson's vocal opposition was the catalyst for the landslide vote that followed.
The two teams are set to meet again this Saturday in Glasgow and while McCoist reckons it's time to move on from past grudges, he admits there's little chance the episode will ever completely escape his memory.
"I certainly don't forget, that's for sure," he told BT Sport when asked by host Darrell Currie if it was difficult to forgive or forget United. "I won't forget, I'll never forget.
"Forgive's different, time's a great healer, there's no doubt about it.
"There was one or two clubs, not just Dundee United, who didn't give Rangers the backing a lot of people felt they should've.
"That was many, many years ago, many moons ago. I think we all should move on and look forward to the game at the weekend.
"But, as I said, I'll never forget."
Earlier this week, former Celtic captain Paul Lambert exclusively told Record Sport he felt Scottish football cut off its nose to spite its face by sending Rangers down to the Third Division.
He said: "I was in England on the outside looking in and I thought it was an absolute disaster for the game and for Scottish football.
“It was a disaster PR-wise, not only for Rangers, but for the image of our game as a whole.
“If Rangers were to get punished, fine, no problem.
“But to send them down to the bottom leagues caused real harm to the Scottish game.
“There was also the issue of denying the national team players from one of the two biggest clubs in the country because Scotland couldn’t pick players who were playing every week in the Third Division, as it was at the time.
“Over the years, the Scotland manager could always rely on three, four, five Rangers players but in the Third Division Rangers had players who would never in a million years be good enough for the national team.
“Whoever made that decision, got it bang wrong. If Rangers needed to be fined, fine them. But taking them out of the league was a big mistake in my opinion.”
