Here's the depth chart for next year. There might be another street free agent signing or two, but it's likely the team roster is pretty set. Locks for the roster (barring injury) are in bold. I would predict 42 locks for the roster, leaving 11 spots for the final roster.
At least 2 (and probably 3) spots will go to WRs. 1 spot is likely going to be Callahan and 2 spots will go the two later round RB picks. I would also bet on Murphy and Amichia making the roster on the OL. I'd then go with Ringo, Gunther, and Murphy.
They look improved relative to last year at RB, TE, DL, and in the secondary. They look even at QB, WR, FB, and OT. They look a little weaker at LB (Peppers, Jones > Biegel). They look a lot weaker in the OL.
QB: Rodgers, Hundley, Callahan
RB: Montgomery, Williams, A. Jones, Mays
FB: Ripkowski, Kerridge
TE: Bennett, R. Rodgers, Kendricks
WR: Nelson, Cobb, Adams, Allison, T. Davis, Janis, Yancey, Dupre
OT: Bakhtiari, Bulaga, Spriggs, Murphy
OG: Taylor, Evans, Barclay, Patrick
C: Linsley, Amichia
P: Schum
K: Crosby
LS: Someone
DL: Clark, Daniels, Jean-Francois, Lowry, Adams, Ringo, Price, Guion
LB: Matthews, Perry, Ryan, Martinez, Fackrell, Biegel, Elliott, Thomas
DB: King, House, Randall, Rollins, J. Jones, Dix, Burnett, Brice, Gunther, Hawkins, Goodson