Joshua has given 24 hours for the fans to decide who faces him on April 13 and it's bad news for Dillian Whyte.
Anthony Joshua admits as he edges towards a seemingly inevitable heavyweight unification showdown with Deontay Wilder that, although he is unbeaten in 22 fights and holds three of the four recognised belts, he still lives in fear of losing to "one punch".
Wilder is scheduled to box Tyson Fury on December 1 but Joshua said Wilder is the ideal opponent he wants next, when he returns to Wembley once again on April 23. Speaking to Sky Sports, Joshua said: "I got my knockout streak back. I have no interest in who wins; I'm not fussed". "My No 1 would be Wilder, that's it".
Asked whether he fancied a rematch by presenter Anna Woolhouse, Whyte said: "Of course I fancy it".
After the fight, Fury called Joshua and his promoter Eddie Hearn "s***houses" and claimed Joshua will never agree to a fight with him. [This] is the best evidence that I am fighting the best heavyweight out there in Deontay Wilder, Joshua is not even close. "He is slow, methodical, ponderous at times, powerful yes, but they all are".
"These guys the last thing they lose is their power, but it was a good way to wake up", Joshua said.
Alexander Povetkin is very tough challenger and he proved that tonight but I came in here to have fun, do what I've been working on in the gym and I did that. If I was you Joshua I'd avoid me because I would jab your face off, you bum.
Wilder, an American, versus former champion Fury is widely regarded as a bigger and more significant fight than Joshua's 22nd professional win, but Joshua insists he wants the victor. Here we look at the media and Twitter reaction to his impressive win against mandatory challenger Povetkin.
Mike Costello, BBC Sport boxing correspondent: "It was a brilliantly placed and timed right hand". He got up, somehow, but another flurry from Joshua was enough to end it.
Anthony Joshua opened a poll for his next opponent on Sunday and within minutes had nearly 60,000 votes. While his hooks were less successful, a sneaky overhand right was a highlight. "No one can beat me skill-for-skill, I don't think. He was moving great, throwing different shots, so it was controlled and he didn't waste anything". Joshua had fought on and won with a broken nose in a previous fight against Carlos Takam. He showed once more that he can deal with adversity. That is a hard choice to make, even for world champions, when you're exhausted and you're hurt and you know there's more to come.
Joshua told talkSPORT: "You have to give him credit".