I think Bradford will be fine and good solid backup options will probably be available all season due to the depth at the position, but if you're that concerned I would drop Clark and keep Daniels.
QB: Drew Brees, Matthew Stafford
RB: Adrian Peterson, Peyton Hillis, Steven Jackson, Jackie Battle
WR: Andre Johnson, Roddy White, Dez Bryant, Steve Smith, Vincent Jackson
TE: Vernon Davis, Tony Gonzalez
K: John Kasay
D/ST: Cincinnati Bengals