Paul McStay has revealed how Celtic chief executive Michael Nicholson reacted when he learned of the club legend's involvement with the Season Ticket Alliance.
McStay is helping Lord Willie Haughey front the alliance which aims to obtain a significant shareholding in the Scottish champions. For every 10,000 supporters that join, the trust will commit £2 million, with the aim of buying shares.
It has been formed off the back of ill-will towards the club hierarchy from supporters.
Asked how Celtic chiefs have reacted to his involvement, McStay told the Let Me Be Frank podcast: "I've been fine, Frank. I met some of the directors at the game on Saturday [Scottish Cup win vs Dunfermline], and also before I came over from Sydney I had a call with Michael Nicholson.
"Last year the club asked me to be an ambassador for the Foundation [Celtic Charity Foundation] and the club in general, anything I can do for the club I will be there, and I relayed that, especially the foundation - so that has not changed.
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"I relayed that to Michael and I said 'I am going to be an ambassador for the Alliance, because I feel passionately about it, I think it's something that should maybe have happened before, and especially with what has happened last year the supporter's voices have to be heard'.
"I explained to him that, and he said 'that is fair enough, it's your decision'. He just said he wanted 'unity' as well. I think when we are unified we are a formidable force and that is when success happens."
McStay also insists Haughey has no designs on being Celtic chairman, or on the board.
He added: "The great thing is, we have known Willie for years. We know where his heart is, but I know what he doesn't want - and that is to be on the board, or chairman, he has really emphasised that.
"So to me, that should make it clear - this is about the supporters and making a difference to their voice being heard."
