For the Wallabies, the worst aspect of Samu Kerevi developing into a world-class centre over the past two years is the fact that he is about to leave Australia behind. Kerevi, cousin of former Australia international Radike Samo, signed up to a three-year contract with Suntory in Japan earlier this year and is scheduled to join the Top League powerhouse after the Rugby World Cup on a reported salary of around £630,000 per year, allegedly a third more than Rugby Australia’s best offer. Losing key assets to overseas contracts is nothing new for Australia but the fact that Kerevi, a tackle-busting behemoth of an inside centre, at 25 years old is just about to enter his prime means his departure will sting more than most. “It is a loss, a big loss. A shame to lose him when he is right at the peak of powers, rather than two to three years down the line,” admits Rod Kafer, the former Wallaby international and Leicester Tigers back. “Samu gives you that ability, genuinely, to beat people one on one, either by going over the top of them or around them. He has very good feet for man who is 109kg, he…