Australian Cricketers' Association chief executive Tim May has hit back at the World Anti-Doping Agency saying it should stop criticising Shane Warne's participation in a charity match.

WADA wants the Australian government to fully apply its anti-drugs rules to ensure Warne's 12-month suspension is properly enforced and he doesn't play in any form of cricket.

But May says the WADA's head David Howman should learn the rules before speaking out.

"Mr Howman's comments appear to have been made without working knowledge of Cricket Australia's Anti-Doping Policy or an understanding of the principles behind the recent arbitration," May said.

"The arbitration was not about Shane Warne, it was about whether or not CA (Cricket Australia) has the ability under its Anti-Doping Policy to extend a ban to testimonial and bona fide charity matches.

"It has been proven - it does not."

CA had said the 33-year-old Warne should not be allowed to play any cricket.

But last month it released a joint statement with the ACA, the players' representative body, announcing that an independent arbitrator had cleared the way for Warne to play in charity matches.

Howman's statements follows on from reported comments from Australian selector Allan Border on Tuesday the legspinner would have the opportunity to train with the national squad as a guest during his ban.

Australia's leading Test wicket-taker tested positive to a banned diuretic last February and was suspended from cricket for a year.

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