Conor McGregor just announced his return to the Octagon -- saying he WILL fight on Jan. 18 in Las Vegas ... but his opponent is still shrouded in mystery.
The UFC star just held a media event in Russia, where he's promoting his Irish whiskey, and of course the conversation turned to his fighting career.
After trashing Khabib Nurmagomedov and telling reporters he would NOT wait around for Khabib to agree to a rematch, Conor said he's ready to move forward with his career.