QB - Brian Griese. No matter where he signs, he will compete for the starting job. He is capable of a QB rating in the high 90s or low 100s, 3000+ yards, and 20+ touchdowns. Check his stats, he's done it before.
WR - Drew Carter, Panthers. At 6'3", I like Carter's height advantage and potential as a red zone target, and he came on strong at the end of the regular season and in the playoffs last year. Ricky Proehl is retiring and Keary Colbert continues to suck, and if NFL teams wise up and start double-teaming and triple-teaming Steve Smith, Carter will be a nice option across the field.
RB - Michael Bennett, Saints. Until there's evidence that Deuce McAllister is fully healthy, Bennett is a capable backup and could benefit from a change in scenery. Chester Taylor, Bennett's replacement in Minn, could go here but I don't think Taylor qualifies as a sleeper, according to most definitions of the term.
TE - Zach Hilton, Saints. Assuming a full recovery for Drew Brees, and at 6'8" and 268, Hilton makes for a MONSTER target over the middle, especially if he were to be utilized in the red zone. I'm not saying that Brees will develop the same rapport with Hilton as he did with Gates, but you never know.
QB - Gus Frerotte, Rams. Marc Bulger has gotten banged around as much as Tina Turner did in Ike's prime and hasn't been able to stay healthy. The "Mad Scientist" Mike Martz isn't running the show anymore but with thier WR corp and poor defense, I think this is a team that will still throw A TON.
WR - Reggie Brown, Eagles. QB Donovan McNabb was hobbled for most of last season, but Brown did reasonably well even with the inaccurate Mike McMahon at the helm. In his last game of his rookie season, Brown caught seven balls for 77 yards and two TDs against a staunch Redskins secondary. Don't discount what a healthy Donovan McNabb could do for him.
RB - Quentin Griffin, Chiefs. Stop laughing - did you see that he was signed to KC and could be Larry Johnson's primary backup if Priest Holmes decides to retire? In that occurrence, and if god forbid something were to happen to Larry Johnson, Q-Tip could be thrust into the limelight, and anyone could run behind that offensive line.
TE - Adam Bergen, Cardinals. Defenses could be torn between Boldin and Fitzgerald stretching the field and creeping up to stop RB Edgerrin James. Bergen could make for a great safety valve for Kurt Warner.