Assuming WBO, IBO, WBA, IBF heavyweight champion Anthony Joshua comes through unscathed on Saturday night, all eyes will be on a potential bout to unify the division against WBC title holder Deontay Wilder.
But Joshua's promoter Eddie Hearn has warned Wilder, who is set to fight lineal champion Tyson Fury later this year, and his team to come back to the table or risk missing the boat.
Joshua is already scheduled to fight on April 13.
“We want the undisputed fight, but it’s very difficult to make a fight when other teams aren’t particularly interested in talking to you,” added Hearn.
“For us it’s all about Saturday, then a WBO mandatory defence, but an undisputed fight would be allowed, it’s just a case of when we can get that done.
“My advice to Wilder’s team, if we beat Povetkin, is hurry up, because you haven’t got long.”
Joshua faces experienced Russian campaigner Povetkin at Wembley in London.
The 39-year-old challenger has only been beaten once in his career, a loss to Wladimir Klitschko in 2013, and boasts 24 knockouts from his 34 wins.
Hearn fears the fight will be the second toughest of Joshua’s career behind his epic win over Klitschko last year.
Hearn admitted he was “nervous” about the showdown, which will be undefeated Joshua’s 22nd professional bout.
“It’s a massive show, a massive event with the biggest star in world boxing and the best heavyweight in the world,” Hearn told Press Association Sport.
“But I’m a bit nervous because I think this is a much tougher fight than people give it credit for. Boxing fans know how big a fight this is and how tough a fight this is.
“Outside of Klitschko I think on paper this is the toughest fight of Joshua’s career so far.
“He’s expected to win. But Povetkin punches very hard, he’s got a good chin, he’s durable. I expect this to be a real test.”