Bosnar, who currently plays for JEF United Chiba in the J-League and until now was the only Australian playing in the J-League, told au.fourfourtwo.com that people shouldn't underestimate the challenge Kennedy will face in Japan.

"I don't think people know how difficult it is to play in the J-League," explained Bosnar. "Secondly, (Japanese players) might be 185 centre metres tall or whatever else but they spring to over two metres.

"It's a big difference and they do have a lot of monster defenders here. I think Josh is going to feel that and that's good for him because I think that that's going to help him be fit and be ready for the World Cup."

Despite the challenge of moving to a foreign land with a young family and trying to acclimatise on and off the pitch, Kennedy will have a lot of support.

"He's got a lot of respect over here because when he's on TV and we sit there with the players during lunch or something they go ‘oh Josh Kennedy, oh Kennedy' and everyone's talking about Kennedy," added Bosnar.

"So I think as far as that's concerned, the media and the supporters, he's going to have a lot of support."

Bosnar had been the only Australian playing at the top level of football in Japan, something he's glad has now changed.

"It's really nice to have another Australian here," revealed Bosnar. "Hopefully we can bring as many as we can over and make it an Australian colony which it's lacking. I think we deserve that."

Australian football has a strong tradition in Japan. In the late 1990s Tony Popovic, Aurelio Vidmar and Graham Arnold were just some of the Socceroos who played in the J-League. Since then though, Australians playing in Japan have been few and far between.

To Bosnar, that's not a surprise.

"They were all brought here firstly by Eddie Thompson and that helps when you've got an Australian coach so hopefully, they can get an Australian coaching in Japan," he said.

Kennedy meanwhile has linked up with his new club in Japan and begun training, although au.fourfourtwo.com understands that Kennedy won't be eligible to play for Nagoya until mid-July.

Nagoya's home game against Vissel Kobe on July 18 is hoped to be Kennedy's first for the club.