Ollie Stedman re-joined the Knights, two years after leaving for Ealing Trailfinders.
The number 8 has an impressive rugby CV after graduating from the academy at Headingley and has played 80 matches of Championship Rugby, scoring 29 tries adding significant experience to the pack.
The back-rower represented England at Under 20 level, and featured in the same group as the likes of current full internationals George Ford, Elliot Daly and Mako Vunipola.
The 27-year-old moved from Carnegie to Newcastle Falcons in 2012 before heading to London Welsh, where he helped the Exiles gain promotion to the Aviva Premiership.
From there he moved to Castle Park to feature for Doncaster and was crucial in our charge up the table, however he then returned to Carnegie where he has been for the last 18 months.
Ollie scored a try in his first game back against Yorkshire Carnegie in the Championship Cup in early December, before following it a week later with his second try in as many games.