The Tour sent an email alerting players of the strict rules in play in France.
The American inspired the tennis world by coming back from debilitating arm injuries.
"Beyond this season, I don't feel my body doing it. It's beat," former doubles world No. 1 said.
Tennis Australia has not denied the allegation it paid the fees, according to the Daily Mail report.
"If everyone had taken Djokovic's line there would still be no tournament," Toni Nadal said of world No. 1's AO saga.
The Greek loves being a player that can resort to Plan B whenever he needs it.
The WTA Player Council member speaks her mind about vaccination mandates and the Djokovic controversy.
