What It Means:

Lee underwent a "clean-up scope" on his knee in April. He was always expected back for camp, but it is good to get some confirmation. Lee remains one of the better linebackers in the league when healthy, but he's struggled to stay on the field.

Dallas ranked 20th in Adjusted Defensive Net Expected Points per play in 2015. Lee played 14 games -- after playing a total of 17 over the previous two years -- and finished with 128 tackles and 2.5 sacks.