If former UFC heavyweight champion Brock Lesnar is eyeing a return to the octagon, he has yet to take the steps required by the UFC’s anti-doping policy.

Lesnar retired for a second time in February after being given a one-year suspension by the U.S. Anti-Doping Agency (USADA) retroactive to July 15, 2016, for multiple drug failures stemming from his UFC 200 fight with Mark Hunt.

The UFC’s anti-doping policy, which is administered by USADA, states that if a retired athlete wants to return to competition, they “must tell the UFC, in writing, that they want to start competing again. After notifying the UFC, they need to be available for testing for at least six months before returning to competition.” Recent reports indicated Lesnar had begun that process.

However, UFC Vice President of Athlete Health and Performance Jeff Novitzky, who oversees the program, told MMAjunkie there is “zero truth” to those reports.

“(Lesnar) is not currently enrolled in the USADA testing pool, nor has there been any inquiry on his part to do so,” Novitzky said.

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MMAjunkie attempted to reach USADA for comment but was unsuccessful.

After five years in retirement and a return to WWE, Lesnar (5-3 MMA, 4-3 UFC) beat Hunt via unanimous decision last summer at UFC 200. Lesnar subsequently came up positive for the banned estrogen blocker clomiphene in an out-of-competition test and in-competition test. He was ultimately suspended for one year, retroactive to Dec. 15 – a term that was suspended by Lesnar’s announced retirement earlier this year.

The result prompted Hunt to file a civil lawsuit against the UFC and Dana White, as well as Lesnar himself. Motions were made by both parties to dismiss the suits.

Reports of a UFC return kicked into high gear Tuesday after a tweet suggested Lesnar, the current WWE Universal Champion, was back in the USADA testing pool and would be dropping his title belt at next month’s “SummerSlam” pay-per-view. The social media buzz to follow was that Lesnar aimed for a November UFC return at the promotion’s expected Madison Square Garden event in New York.

In his first UFC stint, Lesnar took the MMA world by storm when he won the heavyweight title in just his fourth professional fight, demolishing Randy Couture at UFC 91 in 2008. Lesnar retired from the UFC after back-to-back losses in 2011 and just eight total fights. He remains one of the UFC’s biggest pay-per-view draws.

For more on the UFC’s upcoming schedule, visit the UFC Rumors section of the site.