I've been offered TB Mike Williams and Dennis Pitta for Fred Jackson and Mario Manningham. PPR league. What do you guys think?

Me:

QB - Romo, Vick

WR - Lloyd, Bowe, T. Smith, HeyWard-Bey, Manningham

RB - Foster, Mathews, F. Jackson, Leshoure, J. Rodgers

TE - A. Hernandez

Them:

QB - Brees, Freeman

WR - Harvin, A. Brown, Cobb, Tate, M. Williams, A. Jeffery

RB - Lynch, Gore, Hillis

TE - Gates, Pitta

With Hernandez being hurt I need a TE and it doesn't look good for Fred Jackson with how well Spiller has been playing.