Olly Robinson has agreed terms to switch to Cardiff Blues for the 2018/19 campaign.
The back rower – who joined the PRO14 outfit on loan in September – will depart Bristol following four seasons with the club.
“Olly has been a positive ambassador throughout his time with Bristol Rugby – we’re pleased for him that he has secured a long-term contract with Cardiff from next season,” said head coach Pat Lam.
“It’s important for guys to be playing regularly and Olly has that opportunity at the Blues, a place where he has done well during his loan spell.”
He added: “I’m very proud to have played for and captained Bristol – the city I was born in – in the top flight.
“I’m excited about the challenge that awaits at Cardiff next season. It’s a club and competition that I have enjoyed during my loan spell.”