Edinburgh have signed Worcester Warriors' Tonga international forward Aleki Lutui on a two-year deal.
Lutui, 34, has played 168 matches for Worcester, scoring 23 tries, and has been capped 40 times for his country.
While Lutui arrives, centre James King, hooker Andy Titterrell and wingers Sep Visser, the younger brother of Scotland international Tim, and Mike Penn will all depart the Pro12 outfit.
Former Scotland prop Allan Jacobsen had previously announced his retirement.
Edinburgh's interim head coach, Stevie Scott, is hopeful Lutui's physicality and experience will prove an asset for Edinburgh.
"He's a top international player with a wealth of experience and has been one the top performers in the Premiership," he said.
Sep Visser will be leaving Edinburgh
"He's a big, aggressive ball carrier in excellent condition and, being Tongan, he likes the physical side of the game, which will be a huge asset to the club for the coming seasons."
Dutch international Visser scored one try in his eight appearances after the 22-year-old joined his brother at Edinburgh, while 23-year-old Penn failed to make a competitive appearance after arriving from Worcester last summer.
Titterrell, the 32-year-old capped five times by England,
joined Edinburgh on a one-year deal
as cover for injured hooker Steve Lawrie, who has now recovered.
King, who has suffered a recurrent groin injury, is retiring from professional rugby.