Worcester Warriors have released Scotland stand-off Tom Heathcote after his succession of head injuries.
The three-times capped international, 26, is one of 15 out-of-contract players to exit Sixways this summer.
But a lack of game time for Heathcote has forced his departure from the club.
Heathcote has missed large parts of the last two seasons following numerous concussion injuries.
"I'd like to go on record and thank the players for their efforts at the club," said Worcester director of rugby Alan Solomons. "I wish them the best of the luck in their future endeavours."
In addition, fellow stand-off Dorian Jones returns to Dragons following the completion of his loan.
Another Worcester 10, Sam Olver, will also move to Championship runners-up Ealing Trailfinders, along with forward Andrew Durutalo, who returns to the West London club he originally joined a year ago.
As for Warriors' two current internationals, England and Lions centre Ben Te'o and Wales wing Josh Adams, both still have a year left on their contract.
Adams, who won his first two international caps in the Six Nations in February, has been included in Wales' summer tour party to USA and Argentina.
Warriors signings for 2018-19
Backs: Scott van Breda, full-back (Jersey Reds), Ashley Beck, centre (Ospreys), Francois Venter, centre (Cheetahs); Michael Heaney, scrum-half (Doncaster Knights); Jono Lance, fly-half (Queensland Reds)
Forwards: Callum Black, prop (Ulster); Cornell du Preez, back row (Edinburgh); Isaac Miller, hooker (London Scottish); Michael Fatialofa, lock (Hurricanes)
Backs: Jackson Willison centre (Bath), Michael Dowsett, scrum-half, Max Stelling, centre, Ben Howard, full-back, Tom Heathcote, stand-off, Dorian Jones (returning to Dragons after loan), Sam Olver, stand-off (Ealing Trailfinders), Grayson Hart, scrum-half (end of short-term deal)
Forwards: Donncha O'Callaghan, lock (retirement), David Denton, loose forward (Leicester Tigers), Will Spencer, lock (Leicester Tigers), Biyi Alo, prop (Soyaux Angouleme), Huw Taylor, loose forward (Dragons), Kurt Haupt, hooker (end of short-term deal), Andrew Durutalo, loose forward (Ealing Trailfinders)