Sydney boxer George Kambosos Jr has responded to rumours connecting him to a fight with lightweight kingpin Vasyl Lomachenko, saying he'd welcome a bout opposite the Ukranian star in Australia.

The rumour mill was sent into overdrive this week when Lomachenko's promoter, Top Rank's Bob Arum, mentioned Kambosos as a potential opponent for the WBC, WBA and WBO lightweight champion at the end of this year.

It is understood Lomachenko wants to fight for the IBF belt next year, and needs another bout in 2019 to stay busy.

Enter 26-year-old undefeated Sydney-sider Kambosos.

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"There’s an Australian kid (George) Kambosos Jr. who’s very very good," Arum told World Boxing News.

"Our matchmakers will come up with somebody appropriate."

Kambosos, who has spent several training camps as Manny Pacquiao's main sparring partner, fought on the undercard to the Filipino legend's fights against Adrien Broner in Las Vegas in January, and Lucas Matthysse in Kuala Lumpur last year.

Kambosos made made his US debut in May 2018, scoring a stunning first round knockout win headlining in Connecticut.

The rising star said he'd jump at the chance to step into the ring with Lomachenko.

"If the opportunity presents itself to take on the pound for pound number one fighter in the world, Vasyl Lomachenko, for all three of his world titles, then I welcome it with open arms," Kambosos told Sporting News.

"Kambosos vs Lomachenko in Australia has come out of Bob Arum's own mouth, so there are no smoke and mirrors here.

"Spartan Warrior vs The Matrix in front of a sell out stadium in Sydney or Melbourne.

"I say 'Molon Labe - come and get it.'"

Lomachenko most recently fought to a dominant 12 round unanimous decision victory over Luke Campbell in London in August.