McClain spent the first six weeks of the regular season on the physically unable to perform list. He has been out of game action since last December, when he suffered a bruised spinal cord in a game against the Washington Redskins.
At the time, McClain was told by doctors that the injury would end his career. He eventually was given a more promising diagnosis and began his quest to get back on the field.
McClain has been a starter for the Ravens each of the past three years. He had 79 tackles in 13 games last season before his injury. He should provide an instant lift to an insider linebacker position that's been thinned by injuries.