Light heavyweight Callum Johnson wants Joshua Buatsi to step up to the plate for an all-British showdown sooner than later.

Buatsi, an Olympic bronze medal winner, is facing Marko Calic on Sunday in a high stakes clash between rising contenders.

Johnson is a very dangerous puncher, who dropped current champion Artur Beterbiev down hard in their 2018 title scrap, before the Russian boxer stopped Johnson in the fourth.

"Let's be honest, he is Matchroom's 'Golden Boy', or one of them," Johnson told Sky Sports. "He has got bags and bags of talent and he's potentially going to be a world champion and bring massive fights for Matchroom. It would be stupid for them to take any risks.

"He's a fighter at the end of the day and he can only fight who is put in front of him. He's done everything asked of him. You can't take anything away from him, but where his career has stalled, obviously a little bit, but I know all about that myself more than anybody. I feel for him there."

Johnson has tried to get a fight with WBA champion Dmitry Bivol, but the contest never materialized.

The heavy handed boxer would like stay busy and then face Buatsi in 2021.

"If I was a world champion, or I was ahead [in the rankings], I wouldn't want to fight me, I'll be honest, if I didn't have to," said Johnson.

"Obviously there's been talks with Bivol a couple of times, which never materialised. But why would Bivol want to fight me, if he doesn't have to because I'm probably not the biggest of names. I'm well behind him in terms of rankings and things like that, so all I bring to Bivol is problems really. As a fighter it is frustrating when you get these opportunities mentioned to you and they don't materialise. It does frustrate you.

"Personally, I'd like two fights and then Buatsi. I think the public deserves us both to be at our very best and it's only fair that I get a couple of fights before that. One thing for sure, he's going to get a couple of fights in before it. Let's have it on an even playing field. I genuinely believe the best me beats the best him. Couple of fights and I'll be ready to go."