Just as long as he gets to take down trash-talking WBO super welterweight champion Brian Castano first.

Castano's contentious draw in July with American Jermell Charlo, the WBC, WBA and IBF belt holder, has denied Tszyu a unified bout against the winner.

But Australia's budding boxing superstar insists he's happy to bide his time before putting Castano in his place after the Argentine claimed Tszyu had yet to prove himself against any of the division's international big guns.

Vowing to have the last laugh, Tszyu says Castano can run but he can no longer hide.

"That's the thing. He's on mandatory now so he's got no choice but to fight me," said Tszyu, who was elevated to Castano's No.1-ranked challenger status by the WBO in August.

"Yeah, once I start smacking him in the face he's going to regret his words, I guess."

With the Castano-Charlo draw delaying Tszyu's quest for world-title glory, the 26-year-old will instead place his undefeated record on the line against Japan's Takeshi Inoue at Sydney's Qudos Bank Arena on November 17.

"Look, Inoue is a world-ranked opponent so I'm not taking this guy lightly," Tszyu said, admitting he had one eye on both his looming opponents.

"I'm enjoying the whole process. Since six years old, I'm having the time of my life in all honesty.

"It's all about patience. Everything will come."

Despite his confidence, Tszyu (19-0, 15KO) has immense respect for Castano and less so for Charlo.

"Look, Castano is going to be a tough challenge. Charlo, I don't rate Charlo. I never did," Tszyu said.

"Charlo's just over-rated. Charlo's just in a world of his own.

"Castano is a tough competitor, his pressure and his awkwardness.

"He's only small and he always makes it into his fight so the aim is to make his fight into my fight."

Rather than a unified mega-fight for all four world titles, which still shapes as a likely scenario, Tszyu said he'd rather earn the straps one by one.

"To fight for all the belts, you know what? I'd prefer winning each belt one by one just like Canelo Alvarez did," he said.

"You get to take out every champion and everyone that's in the division instead of just one.

"So we'll see how it goes."

Australian Associated Press