Former Coventry City manager Russell Slade has team up with Nathan Clarke once more.
Slade signed Clarke, woh also was with Slade at Leyton Orient, for the Sky Blues in January and the defender, captained the side and played his part in the Sky Blues relegation to League Two.
Clarke was not offered a new deal at Coventry City and has signed a one year deal at Blundell Park.
"I've obviously worked with Russell before and we get on really well, so him being at the club was a big thing for me," said Clarke to Grimsby's club website.