Chaney underwent surgery in January to repair a herniated disk he suffered during Philadelphia's regular season finale. The 25-year old is an important part of Philadelphia's defense, registering 92 tackles, three interceptions and one sack during the 2011 season.
With Chaney out for a while longer, rookie linebacker Mychal Kendricks might take a step closer to securing a starting spot. The second-round pick had 98 tackles and three sacks for the California Golden Bears last year as a senior. The biggest knock on Kendricks is his size (he's just 5-11), but he has impressed during the team's rookie mini camp.