UFC rule will see Conor McGregor return at UFC 300 in blockbuster fight

Conor McGregor appears set to return to action at UFC 300, having seemingly abided by the promotion's ruling over anti-doping.

He's looking sharp in training ahead of returning to competition. Take a look below:

But McGregor is thought to be back in the drug testing pool after revealing he has been 'submitting his stuff' to USADA chief Jeff Novitzky.

Taking to social media, he wrote: "Find my targets. Hit them. F**k the consequences.

"You’re going down. This is fighting. Sparring day with slick Nikolay Grozdev. Always a banger of a spar with the slick fella.”

Then: a massive announcement tucked into the back-end."

He added: “Submitted my stuff to Novitzky. Ball rolling. See you soon you little light work b***h.”

Now, McGregor supposedly re-entering the USADA drug testing pool allows him to compete at the promotion's historic UFC 300 card, which is tentatively slated for April or May next year.

"The fight is not booked for a date, the fight is not booked for a venue, but the fight is booked between Chandler and Conor. "There’s no way that Conor comes back and doesn’t fight me. If Conor doesn’t fight me, he’s probably not coming back - and that’s out of my control.”

Chandler added: "I’m ready to fight in January, February, March, April, May, whenever. It makes a lot of sense that there is a very historic card coming up with the UFC.

"I haven’t been told that’s when it’s going to be, but I wouldn't be surprised if that’s when it is. If it is, I got more and more time to prepare."

McGregor vs Chandler at UFC 300? Watch this space.