Parker's recent knockout of Alexander Dimitrenko in Manukau - the 18th of his career - suggests he is ready to go to the next level, and the similarly undefeated Ruiz Jr would provide that test.
Lonergan said the fight would be broadcast by international company CSI Sports to potentially 80 million households in the United States - where Ruiz Jr is based. In China alone the fight would be broadcast to 400 million households, he said.
Arum, in the fight game for 50 years, will also help with the distribution. "The only recent events to rival this broadcast would the Rugby World Cup held here in 2011, or the America's Cup," Lonergan said. "And the beauty is we own the content and the television rights - if we choose to give a sponsor exposure during the night we can do so whenever we want."
Klitschko's decision to put his proposed fight against Joshua in doubt due to a sanctioning issue has thrown the heavyweight division back into confusion just as it seemed it was settling after Tyson Fury stepped away from the WBO and WBA titles.
Klitschko now appears to be favouring what could be considered an easier route back into the ring after a year of inactivity by lining up Australian Lucas Browne, a decision criticised by Lonergan as "soft".
A potential Parker v Joshua fight remains a possibility in the short term but far more likely is a title fight against Ruiz Jr.
Joshua's promoter Eddie Hearn appears set to look for alternatives such as Kubrat Pulev, while Lonergan looks at ways to pay for what will be the most expensive and most watched boxing event held in New Zealand.