Jamaal Charles and the Kansas City Chiefs have agreed upon a two-year extension that runs through the 2017 season.

His previous contract, signed in 2010, had two years remaining.

The new deal, which runs through 2017, will pay Charles $18.1 million for the additional two years. He will make an extra $5.1 million over the next two seasons, including a $4.4 million raise this year, according to sources. He was scheduled to make $3.9 million this year, including a base salary of $2.65 million.

Brill Barnwell has released his 2014 NFL Trade Value rankings, headlined by Russell Wilson at No. 1 and Andrew Luck at No. 2.

Wilson is ranked ahead of Luck because he is still two years away from being paid market value.

Aaron Rodgers is ranked No. 3, though Barnwell writes that he would rank him as the most talented quarterback in the NFL right now. But Rodgers is 30 and makes far more money than younger, cheaper quarterbacks.

J.J. Watt is the first defensive player on the list and ranks No. 4.

Colin Kaepernick and Cam Newton are ranked No. 5 and No. 6 respectively. 

Robert Quinn is at No. 7 as the second-highest ranked defensive player.

Peyton Manning, Matt Ryan, Drew Brees and Tom Brady rank No. 8-No. 11.

Here's the rest of Barnwell's top-50:

12. Patrick Peterson

13. Earl Thomas

14. Richard Sherman

15. Robert Griffin III

16. A.J. Green

17. Calvin Johnson

18. Von Miller

19. Philip Rivers

20. Eli Manning

21. Ben Roethlisberger

22. Joe Thomas

23. Joe Staley

24. Luke Kuechly

25. Greg Hardy

26. Jadeveon Clowney

27. Jimmy Graham

28. Tyron Smith

29. Duane Brown

30. Julio Jones

31. Dez Bryant

32. Tony Romo

33. Matthew Stafford

34. Patrick Willis

35. Darrelle Revis

36. Lavonte David

37. Demaryius Thomas

38. Muhammad Wilkerson

39. Trent Williams

40. Joe Haden

41. Nate Solder

42. Adrian Peterson

43. Ryan Tannehill

44. Mike Iupati

45. Ndamukong Suh

46. Gerald McCoy

47. Dontari Poe

48. Sheldon Richardson

49. Jim Harbaugh

50. Nick Foles

Jamaal Charles is expected to hold out as training camp begins.

Charles and the Kansas City Chiefs are in discussions on a new contract.

Charles is scheduled to earn $3.9 million this season, which is less than 13 other running backs.

Charles signed a six-year, $28 million deal in 2010.

Rokevious Watkins has been suspended for four games for violating the NFL's substance abuse policy.

Watkins was a fifth-round draft pick for the Rams in 2012, and though he reportedly had a chance to win the starting left guard job his rookie season, he reported to training camp 16 pounds overweight and out of shape.

Watkins signed with the Kansas City Chiefs last season after he was cut by the Rams.