Heavyweight contender Andy Ruiz is still negotiating the details of his rematch with Anthony Joshua.

Last month, Ruiz pulled off a shocker when he stopped Joshua in seven rounds. He dropped Joshua four times before the contest was waved off at Madison Square Garden in New York City.

The win have Ruiz the WBA, WBO, IBF, IBO world titles.

The rematch is being targeted for a date in December.

Joshua's promoter, Eddie Hearn, says Cardiff is the frontrunner to host.

But Ruiz is motivated to bring the bout back to the United States.

Ruiz would like to topple Joshua and then move forward with a fight against WBC heavyweight champion Deontay Wilder.

"We’re still in negotiations, they [are] trying to make us go over there," Ruiz said on Fox Sports.

"We are trying to get it back here in New York. I’d be more comfortable here. Me and [Wilder] we’re in the same team, I just got to beat Anthony Joshua and then we’ll move onto the next."

Wilder and Ruiz are both managed by Al Haymon and fight under the Premier Boxing Champions banner.

Should Ruiz get past Joshua for a second time, making a fight with Wilder will be easy to make.

And Wilder was very pleased with Ruiz's ability to pull off the upset - and he told the Mexican-American that he was happy for him during an interview session with the two boxers.

"I think it’s been this way for a long time since Lennox Lewis. I’m just happy what you did you brought a different type of energy to the heavyweight division – a new face. ‘You go and do the unexpected and change it all up," Wilder said.