Unified world heavyweight champion Anthony Joshua says a fight with Tyson Fury or Deontay Wilder “has to happen in 2020”.

Britain’s Joshua reclaimed his IBF, WBA and WBO titles from Andy Ruiz Jr in Saudi Arabia last weekend.

WBC champion Deontay Wilder is scheduled for a rematch with Britain’s Tyson Fury on 22 February.

By defeating Ruiz, Joshua joined a small cluster of men including Muhammad Ali, Lennox Lewis, Evander Holyfield, Mike Tyson and Floyd Patterson to have reclaimed the world heavyweight title.

Joshua says he will fight either the WBO’s mandatory challenger – currently Ukraine’s Oleksandr Usyk – or the man in the same position with the IBF, Bulgarian Kubrat Pulev next.