Welker ranked 18th free agent

Pete Prisco, who covers the NFL for CBSSports.com, delivers his much-anticipated "top 50 free agents" piece.

From a Patriots perspective, there is just one player on the list, receiver Wes Welker. He checks in at No. 18.

"He led the league in catches, but is he a No. 1 receiver in any other system?" Prisco asks of Welker. "The other issue is age. He turns 31 in June."

Here are some names on Prisco's list that catch the eye from a Patriots perspective (thinking based on need/impact, not cost):

1. DE Mario Williams (Texans)

4. DE/OLB Cliff Avril (Lions)

17. S Tyvon Branch (Raiders)

19. S Dashon Goldson (49ers)

25. OLB Anthony Spencer (Cowboys)

31. WR Reggie Wayne (Colts)

34. WR Pierre Garcon (Colts)

38. DL Jason Jones (Titans)

45. WR Robert Meachem (Saints)

46. S Michael Griffin (Titans)