The hyped-up heavyweight clash between Anthony Joshua and Wladimir Klitschko is just over one week away.

With the IBF, WBA, and WBO titles on the line, the reputations of both fighters at stake, and a worldwide audience tuning in to watch, it all adds up to be one of the biggest fights for each boxer.

Joshua will face his greatest challenge as he defends his IBF title, and Klitschko will be looking to shake off the shackles of his loss to Tyson Fury and reclaim lost glory.

Ever wondered how the fight actually happened?

Well, their managers have just revealed all the details in an interview with Sky Sports.

Talks seemingly emerged between the two camps following the cancellation of Klitschko's rematch with Fury, and the Ukrainian was eager to get back in the ring and reclaim the titles he had lost.

It turned out the undefeated Joshua seemed like a worthy enough opponent.

According to Joshua's promoter Eddie Hearn, it was his camp that began talks, as he sent a text message to Klitschko's manager Bernd Boente discussing the idea.

Hearn revealed: "Once the Tyson Fury fight fell through, I texted Bernd Boente and said there is an opportunity here to fight. 'You're fit, you're ready to fight, do you want to fight Anthony Joshua instead?' He came straight back and we started looking at the options."

Both fighters were keen to accept the proposal; Joshua had a point to prove as a champion, and Klitschko needed to make up for time outside of the ring waiting for Fury.

Negotiations for the fight were very swift as a result, who said: "I think we texted each other about something else, then were discussing this and that.

"I don't know who had the first idea, but it was more or less fluently coming out of our conversation if that could be a possibility. Then we asked our respective fighters, meaning Anthony and Wladimir, and both directly agreed."

The vacant titles were undoubtedly an influence for both fighters, and the location was also a big part of negotiations for Joshua. 

However, Klitschko wasn't overly bothered by this.

"For Wladimir, no question was asked about Germany or any other place. It was absolutely fine. Wladimir has no problems about fighting in other countries."

There you have it. Only one more week to go until they go toe-to-toe at Wembley!