Who to part ways with Addai or L Washington?

So you're leaving the entire season on Drew Brees arm. Not a bad idea but let's be safe and ask for a QB in return too. If you're planning to let go of Big Ben, package him with a WR considering your free agency pool is lacking in RBs; you can't afford losing any of yours just in case one of them gets injured *knock on wood*. Package him with a player like Bowe and/or Cotchery and ask for a QB to replace your Big Ben and ask for Calvin Johnson since that's who you want. I'd ask for McNabb and Johnson. I know Mcnabb is hurt, but no one has said he's out for the season or even out of next weeks game. Plus he's McNabb. He's a great QB.