Worcester Warriors have signed Wasps number eight Sione Vailanu on a two-year deal, starting from next season.

Vailanu was playing in Japan and Hong Kong before being spotted by Sarries.

"It's an opportunity for him to make a real difference to us. In the Premiership you need to have physical and powerful men and Sione is certainly that," said head coach Jonathan Thomas.

Worcester - led by director of rugby Alan Solomons - are bottom of the Premiership but no side will be relegated this season.