New Zealand's most successful domestic club is taking initial steps to join Wellington Phoenix as the second Kiwi side in the competition.

After the failure of the New Zealand Knights who folded in 2007, FFA officials might be reluctant to bring in another Kiwi club but with a population of just under 1.5 million, presents as the biggest untapped market.

Auckland City chairman Ivan Vuksich maintains the club was keen to test themselves in the A-League given their consistant success in the New Zealand Football Championship.

"We'd obviously like to be involved but it's been difficult to pick up when they're calling for expressions of interest," he told AAP.

"We keep hearing they're looking at a 2018-2019 entry and that's quite a way off.

"We've made some tentative enquirers and talked to funders but it's very early days."

While the Knights averaged crowds of less than 3,500 at home games at QBE Stadium on Auckland's North Shore, Vuksich suggested any successful Auckland franchise would need to be based at Mount Smart Stadium in the city's south-east.

"A lot of people don't like North Harbour because it's a bit more exposed and it's hard for Aucklanders to get there from the southern side of the bridge. It's a hell of a place to get to," he said.

While Australian proposals such as those based in southern Sydney and Tasmania have been putting their front foot forward for an A-League spot, Auckland are hoping for some encouragement from A-League bosses to increase efforts in their bid for a spot.

"We would like to be in the A-League but it's always been a fairyland idea that we would be asked," Vuksich said.

"If we had any inkling that there was interest from Australia - and we've never had anything like that - we would try and bed down a few of these things.

"That's as far as we've gone."

Next month the reigning New Zealand Football Championship winners will travel to Japan to compete in their eighth FIFA Club World Cup.