The Irishman said: “Make no bones about it. If Celtic are in England, Celtic are one of the top four/six clubs there.
“Can you imagine then the resources playing at that level, what that would produce for Celtic? It could go as far as it wants then.
“For Celtic to be in the English pyramid system is very tough, because of the size of the club.
“We have the history, huge club, fan-base, team, stadium. It would be a frightening prospect and an exciting prospect if it ever happened, but, for others looking through, it would be very difficult to accept.
“If you are another club playing in that League or the Championship or League One, would you like that type of threat coming in to possibly stop you coming into the league?
“I don’t think you would want it and that is the reality.
“So, I think it is always going to be difficult to get that across.”
*Supporters pic by Patrick McGuire.