Kell Brook has fiercely hit back at Amir Khan following comments from the Bolton fighter that the pair were not on the same level.
The two fighters are due to go toe-to-toe in Manchester in February, with the long-time rivals finally facing off in a crunch clash in Manchester.
Khan, 34-5, and Brook, 39-3, have a fierce rivalry that stretches back to the 2008 Olympics, where the former earned a place on Team GB.
For the past decade, the pair have been embroiled in a war of words and their rivalry will finally come to a head in just eight weeks - and Brook has taken issue to comments from Khan.
“Levels below!? He’s in Cuckoo Land. He needs to go back to believing he’s a celebrity. This fight is the icing on the cake," Brook said.
“This fight is a grudge match. This is what I want. I am sick of people asking me about this fight. I’ve been in with the pound for pound best in the world. This is an easy fight for me.
“You’re getting knocked out. This is my first fight. Forget my legacy. I’m going to knock you spark out. You’ll see, you’re getting it.
“It’s easy to talk a big game. Watch what happens. I’m going to knock you out and look over and go, ‘I told you so.’ Levels below you?! You’re nuts.”
“You’ve never acknowledged me. I’ve heard you say, ‘Who is Kell Brook?’ I know you know who I am. I can’t want to spark you. I’m going to retire you.
“We will see who the king of the north is. I’m so happy this fight has gotten made. It means everything to me. As I said, I am treating it like it’s my first fight.”