"Personally, I don't see the need for another major stadium in Cardiff. It's hard to see how a city of this size could support a 74,000 stadium and a 60,000 one. Owning a stadium is a very expensive thing.
"You only have to look around English football to see the debts that have been incurred. The last thing football would want to see is another team get themselves into financial difficulty by building a new stadium."
Moffett thinks the stadium can be used by the Bluebirds with a major problem, the pitch, being made artificial to ensure it's quality.
"I don't see any reason why Welsh rugby and Cardiff City can't be accommodated in one stadium. I come from an environment in Australia where ground-sharing is the accepted norm. The biggest issue we would have to overcome at the Millennium Stadium would be the playing surface.
"I don't think a grass surface would stand up to what we put on there, plus Premiership football. The solution is for the turf manufacturers to come up with an artificial surface suitable for playing both football and rugby on. I believe Uefa have recently sanctioned a trial of a new synthetic pitch."
"I am more than happy to meet with Cardiff City anytime, anywhere, to talk about anything," he said. "I was delighted to see them go up to Division One. That was fantastic for Welsh sport."
Another key reason why the WRU may be looking for Cardiff City to use the Millennium Stadium is to help with revenues. The WRU are reported to be in debt upto the tune of £60m. Moffett says selling the stadium is not an option as it is itself their one hope of a revenue source.
"We are most unlikely to sell the stadium, because what would anyone be buying? They would be buying our revenues and the opportunity to increase those revenues. We have put together a new management team designed to do just that. So it just wouldn't make any sense."