I personally know one of the survivors involved. According to him, that avenue has well passed.
At the start, when he first went public with what happened him, all the he wanted was an apology, an acknowledgement and acceptance of blame of what happened, and a donation to a child abuse charity.
But Celtic wouldn't do that, they shamefully went down the Separate Entity' pish.
Could change i suppose, maybe if they finally admit and say sorry, and it's only one of the survivors, but knowing him, i think he'll stick to his guns.
We'll see ...