Cook is back for a second spell at Castleford, after a brief loan spell in 2008. The prop has had other stints at Bradford, Hull KR and London, and captained the latter last season during their turbulent year.
He came out of the experience with his head held high, but jumped at the opportunity to stay in Super League by joining the Tigers.
Cook, who has a Super League crown and a World Club Challenge on his CV, is also an ex-England international, after making two appearances in 2006.
Matt is proudly sponsored by ETA Electrical
*Photograph courtesy of SWPix.