Former New Zealand Prime Minister Helen Clark is presented with a football by former Fifa representative Chuck Blazer.

A Fifa whistleblower has suggested that former New Zealand Prime Minister Helen Clark could be the person to lead reform in the troubled organisation.

Australia's Bonita Mersiades lifted the lid on the nation's bid for the 2018 World Cup, outlining the deals and double-deals that go on behind closed doors in Fifa.

Mersiades was a member of the bid team then, and had a close look at how Fifa operated during that time.

Now an advocate for Fifa reform, Mersiades has repeatedly called for someone outside of football to lead Fifa reform.

In her latest interview with German site zeit.de, Mersiades again suggested that a face from outside football was needed to lead the change needed in the organisation.

"What has happened since the end of May when seven senior football bosses have been arrested? As much as necessary, but as little as possible," Mersiades said.

"Fifa is unable and unwilling to change. The old forces are still active."

Asked whether Fifa needed to be destroyed, Mersiades said the organisation needed a fresh start with new rules and new people. The key would be those new people.

"A commission that deals with it would [need] an independent person who enjoys the respect of the football world. From a man who had no job in football or will in the future. A 'game changer' can bring people to the table.

"An American would be inappropriate, because US authorities are investigating the Fifa.

"I think to Kofi Annan or Helen Clark, former Prime Minister of New Zealand and today head of the UN Development Programme. I trust you with this task, though not overnight."

It's not the first time Mersiades has called for Clark to lead Fifa reform, writing several pieces in which she calls for the likes of Clark, Annan or even Mitt Romney to lead change in the organisation.