By Adam Hoge-
(CBS) The Bears signed defensive tackle Landon Cohen Friday and officially placed Henry Melton on injured reserve.
Melton suffered a torn ACL last Sunday against the Steelers.
Cohen is with his fifth NFL team, having appeared in 27 games with five starts with Detroit (2008-09), Jacksonville (2010), New England (2010-11) and Dallas (2013) recording 32 tackles.
Adam Hoge covers the Bears for CBSChicago.com and is a frequent contributor to 670 The Score. Follow him on Twitter at @AdamHoge.