Top Rank's CEO Bob Arum, who co-promotes WBA middleweight champion Ryota Murata, is backing his fighter to become a unified titleholder when he faces IBF champion Gennadiy Golovkin in late December.

At the moment Arum is working out the details to finalize a deal between Murata and Golovkin, which is going to take place in Japan.

"We are working very, very hard to put that fight together at the end of the year. We hope that the quarantine will have eased in Japan.

"We are not only fighting to raise the money for the fight, but we are fighting the pandemic too. It's a good fight. Murata is a gold medallist from the Olympics and is really coming along. Golovkin, for all his great success, is slipping as he gets older. So it's a competitive fight."

Chris Eubank Jr. expects to receive a mandatory crack at the WBA world title - but he also wants to face Golovkin.

Eubank will first have a fight in December, with UK rival Liam Williams as the frontrunner opponent.

According to BOXXER promoter Ben Shalom, his company has already made contact with Golovkin's team to discuss a clash with Eubank Jr. for next May.

However, Arum feels Murata can pull off a shocker on the near 40-year-old Golovkin.

And if Murata pulls it off, Arum has no problem with finalizing a deal to defend the titles against Eubank Jr. in 2022.

"If GGG is successful, I'm sure that the Eubank Jr fight is very attractive to him. But I think that Murata, on home ground, could pull off an upset. In which case I'd love nothing more than for Murata to fight Eubank Jr. It would be a big fight in the US, Japan and the UK," Arum said.