Johnson was speaking after he resoundingly defeated Alexander Gustafsson in just 135 seconds. Gustafsson is widely considered the fighter who gave Jones the toughest time in the ring, and Johnson knocked him out with no difficulty.
He said: "The same way I took Gus out, I'll knock him out. I'm going to do my best to take his head off. Jon, keep your hands up, because if you don't, it's lights out."
"My goal is to win the title one day, so I knew I had to get through Gus. I had to make it ugly for him so people wouldn't doubt me. Now, I'm going against the champ and they're going to doubt me, so I have to prove them wrong, too."
Just after their fight Johnson said: "I was like, 'I can't believe I just beat the guy who, in my opinion, beat Jon Jones.' So I was really in a state of shock. Nobody's ever stopped Alexander before like that, so I was just… speechless, really."