Anthony Joshua has effectively shot down the idea of a massive triple header in 2018 against Deontay Wilder, Joseph Parker, and Tyson Fury.

The IBF and WBA champion's promoter Eddie Hearn planned out the triple header as negotiations with Wilder have been going on for a long time, while Parker also recently challenged the British superstar to a unification fight.

Meanwhile, Tyson Fury has called out every heavyweight champion in an attempt to return to the ring in the new year.

"There's a lot of talk about 2018 in my career. It's seems like this is the grand finale," Joshua told Sport 360.

"(But) even though there's a lot of talk – in reality, it isn't going to be like Joseph Parker, Wilder and Tyson Fury all in one year."

Fury, who during his time away from the game has ballooned up to 25 stone, called out the British champion for being a "useless bum".

Joshua took to Twitter to respond to Fury, labelling him a "fat F***" that needs to get in shape.

Joshua has usually refrained himself from trash talk against potential opponents and this is a rare example of a time where he loses his cool.

"I try to be professional but remember this is a fighting sport and you have to meet fire with fire now and again," he said.

"Sometimes if a dog barks at you so many times, the other dog needs to bite back and make sure the other dog puts his tail between his legs. And that's what you have to do with Tyson Fury sometimes. And that's all it was, I just had to bite back.

"I'm not one of these dogs that stay in the garden barking for hours, I make my noise – and that's it – until we fight I don't need to be hollering and yelling for days and for months."