Andrew Carnahan is overcoming a serious knee injury that he injured last September.  The injury caused him to miss the remainder of last season.  Carnahan is a big guy at 6′7″, 296 pounds and he could add more weight to his frame as long as his knees can handle it.  Carnahan has a nasty attitude and should help him in blocking for the run in the NFL.  Carnahan likely has a ceiling of being a backup tackle in the pros.