Chael Sonnen is planning a return to action, just not inside the cage.

Instead, according to a report by FrontRowBrian on Twitter, Sonnen will face Andre Galvao at Metamoris 4 this August 9 in Los Angeles in a grappling contest.

The report states the contest will serve as the main event for the card. Numerous other UFC fighters have competed at the event in the past, and Josh Barnett is rumored for the August one, as well.

Galvao is a former Strikeforce fighter who owns a 5-2 MMA record. He is a two-time world champion and has won the Abu Dhabi Combat Club title numerous times.

Sonnen, a former standout wrestler, three times fought for the UFC title. He announced his retirement recently following a failed drug test.