Back-rower Sione Kalamafoni has joined the Scarlets from Leicester Tigers.
The back-rower teams up again with Glenn Delaney, the Scarlets head coach who was in charge at Nottingham when Kalamafoni first came to the UK.
Capped 37 times by Tonga, he played in three Rugby World Cups and made 64 appearances in three seasons at Tigers after a move from Gloucester.
The 32-year-old Kalamafoni said: “I am very excited by the move to West Wales with my wife Limi and my three children. Linking up again with Glenn is something I always wanted to do. He has been such a big influence on my career.
“I am lucky to be joining the Scarlets from another great club in Leicester Tigers. I have really enjoyed my last three years at Leicester and wish all my friends there and the coaching team all the very best.”
South African centre EW Viljoen, meanwhile, has joined the Lions in South Africa after one season with Tigers and fly-half Noel Reid has confirmed a move to Agen in France.