According to Eddie Hearn, promoter for IBO, WBA, IBF heavyweight champion Anthony Joshua (19-0, 19 KOs), they are waiting for Wladimir Klitschko to make a final decision regarding a potential rematch in the fall.

The two boxers collided last month at Wembley before a record of 90,000 fans.

There is an immediate rematch clause. Klitschko has yet to make a ruling on that subject, but plans to do so in the coming weeks.

If Klitschko decides to go in another direction, then Joshua has to deal with an IBF mandatory defense against Kubrat Pulev of Bulgeria.  

"We have a mandatory challenger in Kubrat Pulev for the IBF. We have a situation with Wladimir Klitschko where we would like to make that fight again," Hearn told Sky Sports.

"Fans and broadcasters would like to do that fight again and Wladimir is currently on holiday for two weeks and he will make a decision on his return. If that's a fight that Wladimir wants, I feel like that will be next for Anthony Joshua."

Besides Pulev, there is also the issue of the WBA's mandatory defense against Cuban puncher Luis Ortiz.

Joshua will have to deal with his mandatory obligations in order to secure the much bigger fights, with unification bouts against WBC champion Deontay Wilder of the United States and WBO champion Joseph Parker of New Zealand.

"Of course there are other big fights outside of his mandatories," said Hearn. "The two champions. Joseph Parker, we just saw him defend his world title, Deontay Wilder. We have got a six, eight, 10-year plan with Anthony Joshua, so people are talking about all these super fights now. We want them, but we have also got to realise there is a long way to go.

"We have to box off these mandatories and the aim is to become the undisputed heavyweight champion of the world, to collect all those belts. To do it we are going to have to be very smart, we're going to have to do a lot of manoeuvring around and he is going to have to do a lot of winning in the ring."