Wallabies veteran Matt Giteau says his family's desire to be closer to Australia was behind his decision to leave Europe to play in Japan.
In a move that will likely end his Test career, the 34-year-old playmaker will exit French club Toulon at the end of the European rugby union season.
He did not reveal which Japanese Top League club he will join, but he has been linked with recently-crowned champions Suntory.
"Making this decision was the toughest of my rugby career but it is the best for my family to be closer to Australia," Giteau posted on Instagram, translated from French.
"The time spent in Toulon was the best period of my rugby career.
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"My main goal now is to win titles for this historic club."
The 103-Test star's international future was under a cloud after he suffered a broken ankle playing for Australia in their 42-8 Bledisloe Cup loss to New Zealand in August.
He revived his Wallabies career ahead of the 2015 World Cup, playing in that year's Rugby Championship after three years in the international wilderness.
The former Brumbies and Western Force star, who made his Wallabies debut in 2002, is believed to be among the highest-paid players in world rugby at French Top 14 club Toulon.
"I want to say a big thank you to the players, (who I have made life long friendship with), coaches, president and staff behind the scenes since 2011. I owe a lot to you," Giteau said.
"I also want to say a big thank you to the supporters Toulonnais who will remain in my heart for life."
