Monday 30 January 2017 12:07, UK
Matt Giteau will leave Toulon at the end of the French Top 14 season to embark on a new chapter of his career in Japan.
The Australian has been with Toulon since 2011 and won three consecutive European crowns with the club from 2013 to 2015, and the Top 14 title in 2014.
"Taking this decision was the most difficult of my rugby career but it's the best for my family to be closer to Australia," the playmaker posted on Instagram.
"I want to say a big thank you to the players (with whom I've made lifelong friendships) the coaches, the president, and backroom staff since 2011.
"I owe a great deal to you all. I want to also thank the Toulon fans who will remain in my heart."
Giteau has only recently returned to full fitness after five months sidelined with a broken ankle and leg fracture playing for the Wallabies against New Zealand in the Rugby Championship.
He described his spell at Toulon, the club he joined in 2011, as "the best period of my rugby career".
"My main objective now is to win titles for this historic club."