The hard-hitting wing was originally due to leave the Welsh region next May but has been allowed to return home to Brisbane after nearly seven years at Stradey Park. After making his debut in 1998 for Llanelli RFC, Finau made over 200 appearances for club and later the region, featuring in both of Llanelli's Heineken Cup semi-final appearances.
"Salesi's contract is due to terminate next May and by mutual consent we have agreed to release Salesi from his contract to enable him to return to his home in Brisbane," said Scarlets chief executive Stuart Gallacher. "Sal has been a wonderful clubman for both Llanelli RFC and the Scarlets - a terrific professional and one of the nicest people I have ever met in the game.
"His dedication to the game and indeed his contribution to the town of Llanelli has been outstanding. His work in the community and particularly in the schools has been terrific and all at Stradey wish him, Karren and the children the very best for the future".
Finau's departure comes following agreed quotas on non-Welsh qualified players eligible to play for the four regions in the Celtic League, Powergen Cup and Heineken Cup.
"I have had a truly wonderful time at Llanelli and have been very happy living in the town" added Salesi. "I have no regrets and wish to thank everyone at Stradey, the Chief Executive and the Coaching staff, who have helped me enjoy my time here so much.
"I am sure that the Scarlets will again become a major force in Europe".
As the countdown continues for RWC2015, Tournament Chief Executive Debbie Jevans visited the Millennium Stadium to discuss preparations for the eight matches and reveal the positive news that 100,000 tickets for games at the home of Welsh rugby have sold in the last seven days.
Jason Harries is targeting a first win on the World Series circuit this season with Wales. The series returns to action this weekend in Dubai where Harries is part of a team hoping to build from its efforts in round one in October.
Wales skipper Jevon Groves says his side have addressed a few points from Gold Coast and aim to 'hit the ground running' in the next two rounds of the World Series, kicking off with this weekend in Dubai before heading off to South Africa next week.
Wales Sevens manager Steff Thomas is hopeful his side can build from a quarter-final spot in the opening round of the World Series in Australia when his side take part in the forthcoming double header in Dubai and South Africa.