Australia head coach Michael Cheika has hit back at Toulon president Mourad Boudjellal after his comments about Quade Cooper's U-turn.
Cooper, who earlier this year was pictured in a Toulon jersey shaking hands with Boudjellal, is expected to snub the Top 14 giants and remain at home.
That has irked the French side, with the club boss having launched a counter-attack at Cooper and the Australian Rugby Union over the ongoing debacle.
Boudjellal told French daily Midi Olimpique: "The moron of the Australian federation who does not know his file needs to know that the promise of employment is no longer the question.
"€150 000 ($A228,000) was to pay for the release of promise of contract, but Cooper has signed his contract, I can produce it if necessary. The contract promise is now obsolete. At the present time, if Cooper withdraws, he will have to pay the amount of the contract! It could make him alone, the second most indebted State after Greece (laughs)!"
Wallabies head coach Cheika has responded to those comments by saying: "I don't think it's necessary to have that type of language," he told AAP.
"(I'm told) he said they're going to be as broke as Greece.
"Well, I don't think that's an issue to be joking about, to be honest. There's a lot of people struggling over there.
"So I don't think it's very funny, saying any of that type of stuff.
"He's entitled to say what he likes about what he wants to do. That's fine, but I don't think those analogies are really necessary."