The queue of potential opponents is growing for Australia's dual middleweight boxing world champion Daniel Geale as he prepares to check two of them out in person.

Little more than a week after returning from Germany, where he dethroned WBA middleweight Super champion Felix Sturm, Geale is heading overseas again.

He leaves Sydney on Tuesday night to head to Las Vegas, where next weekend Julio Cesar Chavez Jr defends his WBC middleweight crown against Sergio Martinez.

The winner is a possible opponent for IBF and WBA Super champion Geale, in what would potentially be a massive three-belt unification match.

Geale has mandatory defences looming for the IBF belt against Australian compatriot Sam Soliman and for the WBA title against Kazakhstan's heavy handed Gennady Golovkin.

He is awaiting confirmation of the time limits for both defences.

Geale revealed British boxers Matthew Macklin and Martin Murray were both interested in fighting him in England.

Macklin dropped a split decision to Sturm in June 2011, while Murray drew with the German less than six months later.

"We've got some big things on the radar, we're just not rushing it," Geale said.

Macklin, who was stopped by Martinez last March, is appearing on the undercard of the Chavez Jr-Martinez fight.

Mexican Chavez (46-0-1, 32 KOs) the son of the legendary multi-world title winner bearing the same christian names, will make his fourth title defence.

Argentinian Martinez (49-2-2, 28 KOs) is widely regarded as the world's best middleweight and one of the leading pound-for-pound fighters.

"It's an interesting fight, they are both very different fighters," Geale said.

"I've tipped Martinez, he's got the speed.

"There are a few doubts there as well, Chavez Jr is a bit younger, he's definitely a pressure fighter.

"If he can track down Martinez and improve a little bit, I think it changes the fight completely.

"Chavez is pretty tough as well, so it will be interesting to see whether Martinez can hurt him at all."

While in Las Vegas, Geale expects to meet his American promoter Gary Shaw and boxers and officials attached to the HBO cable television network.