"The point is that whatever is there has to be safe for everybody - so we've got to respect the decision that has been made by the professionals. It's just one of those things."
Canterbury Rugby Union chief executive Hamish Riach said it was sad to learn the stadium would be out of action again next year, after the Crusaders had to travel for every match in the recently completed Super 15 season.
"We are utterly determined to have the Crusaders play in Christchurch next year - that's our primary goal. We think this team should be playing in front of its home fans," Mr Riach said.
Options for a new ground included the city's smaller Rugby League Park and Rugby Park, or suitable areas of bare land. Getting a new ground ready would "quickly run into the millions", and help would be needed from fundraising, the rugby community or from the business community.
"We have a matter of weeks to solve our problem, as opposed to many months. No solution is obvious or easy or ideal." On the future of the stadium, Christchurch city councillor Sue Wells said: "We are not yet in a position to say if the entire thing can or will be rebuilt."
Some of the options for fixing the liquefaction-damaged ground beneath the stands were "quite unusual". Further engineering reports were expected within the next couple of months.
Christchurch and Canterbury Tourism chief executive Tim Hunter said the convention centre was important to Christchurch, and the city had done well out of it financially.
Tourism driven by conferences and conventions was worth between $80 million and $100 million a year to Christchurch, with the conference visitor spending about three times as much cash as the general leisure traveller. Losing the centre would be a serious blow. The next question would be what replaced it, Mr Hunter said.