Nick Barnett has agreed to sign a one-year deal with the Washington Redskins.

Barnett was a longtime linebacker of the Green Bay Packers and spent the past two seasons with the Buffalo Bills.

Barnett was an All-Pro in 2007.

Robert Griffin III will wear a brace on his surgically repaired right knee during the entire 2013 season.

“I don’t think I’m mindful of it,” Griffin said. “I don’t really worry about my leg any more. I just play football. That’s a sign that you’re getting ready. Consistently I forget my brace, like I did on the first day [of camp] and everybody made a big deal out of that. But I feel great. It’s just about Coach wanting to be real cautious with me. And that’s understandable. So I’m just taking it that way and I feel good in seven-on-seven.”

Robert Griffin III has been medically cleared to participate in training camp, but he is not expected to play in any preseason games.

Mike Shanahan has a history of being extra cautious in bringing players back from injury.

One Redskins front-office member said Washington will not want to subject Griffin to any hits this summer. 

The Redskins open the regular season with a Monday night game against the Philadelphia Eagles.

The Seattle Seahawks have the most talent in the NFL of players 25-and-under.

The Houston Texans were ranked first in 2010, while the Tampa Bay Buccaneers had the distinction in 2011 and the New England Patriots last season.

The Seahawks feature Russell Wilson, Russell Okung, Richard Sherman, Earl Thomas and Kam Chancellor.

The San Francisco 49ers rank second with Colin Kaepernick and Aldson Smith headlining.

The Cincinnati Bengals, Washington Redskins and Green Bay Packers round out the top-five.

6. St. Louis Rams
7. Tampa Bay Buccaneers
8. Carolina Panthers
9. New England Patriots
10. Indianapolis Colts
11. New York Jets
12. Cleveland Browns
13. Denver Broncos
14. Tennessee Titans
15. New York Giants
16. Houston Texans
17. Dallas Cowboys
18. Minnesota Vikings
19. Miami Dolphins
20. Pittsburgh Steelers
21. Kansas City Chiefs
22. Detroit Lions
23. Philadelphia Eagles
24. Atlanta Falcons
25. Arizona Cardinals
26. Baltimore Ravens
27. Buffalo Bills
28. Chicago Bears
29. New Orleans Saints
30. San Diego Chargers
31. Jacksonville Jaguars
32. Oakland Raiders 

Robert Griffin III has been cleared to practice as the Washington Redskins open training camp on Thursday.

Griffin was to be evaluated by Dr. James Andrews, who performed the surgery to repair his torn ACL and LCL in his right knee, on Wednesday. The Washington Times, however, reported Monday that Andrews' examination of Griffin took place last Wednesday and Thursday.

Chris Cooley has retired from the NFL after nine seasons and two Pro Bowls at tight end with the Washington Redskins.

Cooley will join the Redskins for their radio broadcasts.

Cooley said earlier in the offseason that he would only want to play for the Redskins.