FIFA wrote to FFA on Friday to say there were no grounds to open a case and the matter was closed.

FFA CEO Ben Buckley said he was pleased reports published in The Age newspaper were shown to have no substance.

"We stated all along that those damaging allegations were false," Buckley said.

"Subsequently we have been cleared by the Federal Government, independent auditors and now by FIFA.

"With this behind us we can now concentrate on our bid to bring the biggest sporting event in the world to Australia in 2022."

Australia's bid gains momentum next week when a delegation of FIFA inspectors, led by Chilean Football Federation president Harold Mayne-Nicholls, visits to determine its suitability in hosting the greatest show on earth.

The delegates will be escorted by FFA to inspect a selection of stadiums, hotels, training grounds and other infrastructure included in Australia's bid.

The inspection forms part of a two-month tour by FIFA to each of the nine countries who are bidding to host the 2018 or 2022 World Cup tournaments.

At the end of the tour the delegation will submit an objective report to assist FIFA's 24 executive members in selecting a host nation, with the announcement to be made on December 2 in Zurich.

"We are totally focused on bringing the FIFA World Cup to Australia in 2022," said FFA chairman Frank Lowy.

"The inspection tour of Australia provides an opportunity to showcase our first-class infrastructure and share details of our proposal for a uniquely Australian 2022 FIFA World Cup with FIFA directly.

"It is an important milestone in the bidding process and we need to ensure the inspectors can make the most of their short time here and see as much as possible without distractions."

Ten host cities have been selected as part of the bid under Australia's nationwide hosting proposal that will see World Cup matches in six states and territories.

Three new stadiums will be built in Perth, Canberra and Blacktown in Western Sydney and nine others upgraded should the bid be successful.