It looks like Jon Jones tuned in to Joe Rogan’s recent podcast with Alexander Gustafsson on the Joe Rogan Experience MMA show.

Gustafsson, who lost a razor close decision to Jones in 2013, told Rogan that beating ‘Bones’ is ‘bigger than taking the belt’ and entertained the possibility of a boxing match with the former light heavyweight champion.

Jones, who is currently under suspension after testing positive for performance-enhancing drugs, snapped back at Gustafsson on Twitter and promised ‘The Mauler’ that he would ‘never’ beat him.

@AlexTheMauler Beat me in three? Your hands were the only thing you had over me in our first fight. That gap is closing fast. Our first fight will be the greatest thing you’ve ever done inside of that octagon. You will never beat me, that’s my promise to you. — Jon Bones Jones (@JonnyBones) April 20, 2018

Jones followed up with another tweet of a video of him working the pads in his garage, showing Gustafsson that his boxing has improved leaps and bounds since their Fight of the Year epic at UFC 165.

Broke a nice sweat in my garage tonight pic.twitter.com/kyN0KnL4dn — Jon Bones Jones (@JonnyBones) April 20, 2018

Jones, 30, could face a possible four-year USADA suspension for his recent failed drug test. The Jackson-Wink standout tested positive for clomiphene and letrozol back in 2016 and, due to being a repeat offender, could face a much sterner punishment this time round.

The former pound-for-pound No. 1 has been removed from the UFC rankings and was stripped of the light heavyweight title last year. The California State Athletic Commission has also revoked his MMA license, and the controversial star awaits his hearing with USADA.