Call me contrarian, but Mike Brown is a difference maker on the Bears D and frankly, they know it ... its not like they will have him sitting on the bench ...
Brown has a history of scoring well even at FS.
I would not trade Brown for any of these guys (from current FBG dynasty rankings) ...
22 Oshiomogho Atogwe, STL 31 20 30 27.0
32 Kenoy Kennedy, DET 24 56 24 34.7
33 Antrel Rolle, ARI 33 23 52 36.0
34 Deon Grant, SEA 38 55 16 36.3
37 Marlin Jackson, IND 51 36 31 39.3
38 Aaron Rouse, GB 32 59 27 39.3
39 Will Demps, NYG 37 25 57 39.7
40 Ken Hamlin, DAL 22 * 39 40.7
41 Lawyer Milloy, ATL 34 57 32 41.0
42 Ko Simpson, BUF 43 34 49 42.0
43 Adam Archuleta, CHI 55 46 26 42.3
44 Reggie Nelson, JAX 35 * 34 43.3
45 Cedric Griffin, MIN 58 37 38 44.3
46 Brandon Meriweather, NE 45 60 28 44.3
47 Sabby Piscitelli, TB 48 53 33 44.7
48 Daniel Bullocks, DET 42 48 48 46.0
49 Stuart Schweigert, OAK 41 42 56 46.3
50 Sean Considine, PHI * 43 45 49.7
51 Brodney Pool, CLE 57 41 54 50.7
52 Asante Samuel, NE 49 44 * 51.3
53 Quentin Jammer, SD * 38 * 53.3
54 Nnamdi Asomugha, OAK * 39 * 53.7
55 Yeremiah Bell, MIA 60 * 40 53.7
56 Nick Harper, TEN * 40 * 54.0
57 Kevin Kaesviharn, NO 52 * 51 54.7
58 Josh Bullocks, NO 44 * * 55.3
59 Rodney Harrison, NE * * 44 55.3
60 Renaldo Hill, MIA * 45 * 55.7
61 Jermaine Phillips, TB 46 * * 56.0
62 Michael Griffin, TEN 47 * * 56.3
63 Anthony Henry, DAL * 47 * 56.3
64 Dre Bly, DEN * 49 59 56.3
65 Anthony Smith, PIT 56 * 53 56.7
66 Charles Woodson, GB * 50 * 57.3
67 Johnathan Joseph, CIN * * 50 57.3
68 Ty Law, KC * 51 * 57.7
69 Nathan Vasher, CHI * 52 * 58.0
70 Erik Coleman, NYJ 54 * 60 58.3
71 Glenn Earl, HOU 53 * * 58.3
72 Leigh Bodden, CLE * * 55 59.0
73 Darrelle Revis, NYJ * 58 * 60.0
74 Danieal Manning, CHI * * 58 60.0
75 Corey Chavous, STL 59 * * 60.3