Doncaster Knights have signed Ben Hooper from Leeds Carnegie on loan until the end of the season. The front-rower will join up with Clive Griffiths' side for the remainder of the Championship season.
Doncaster Knights have signed Newport Gwent Dragons hooker Rhys Buckley for the 2012/13 season.
22 year-old Buckley has graduated through the professional youth set-up in South Wales.
He spent two years in the Principality Premiership for Pontypool before being picked up by his region.