Worcester have signed Wales international back-row forward Andries Pretorius, who will make the move from Cardiff Blues at the end of the season.
The South Africa-born player captained the Blues last season and qualified for Wales on residency grounds, making his Test debut during last summer's tour of Japan.
Pretorius may be playing for the Warriors in the Championship though, with Dean Ryan's side facing an uphill struggle to retain their place in the Aviva Premiership.
"I have loved my time at Cardiff Blues," said Pretorius.
"I will continue to give Cardiff 100 per cent until the end of the season. My focus will then turn to Worcester."
Worcester rugby director Dean Ryan was pleased to secure the signature of an influential player.
"I am delighted that Andries has chosen to join the club as we build for the future to become a competitive force in the Aviva Premiership," he said.
"We have seen two of our top players extend their contracts last month, which demonstrates that current players and those we are seeking to bring to the club buy into our vision of building for the long-term.
"Andries has a proven track record, so we look forward to welcoming him to Sixways in the summer."