I'd love to see them get Floyd. His ERAs have been decent considering he's in the A.L.
His WHIP has generally be okay too, since going to Chicago. He'll actually miss bats on occasion, as well. Outside of McDonald(for 5 innings), strikeouts are about as frequent as sighting Halley's Comet for the rest of the Pirates' staff from last season.
His home park shouldn't be discounted either. Makes his AL numbers just a touch more impressive. If memory serves, U.S. Cellular has been a pretty serious hitters park since they brought in the fences a while back.
Floyd is a guy who fits the M.O. of starters that the Pirates should have been looking at the last couple years: Productive SPs who may be saddled with a sizeable contract, but that means his team will probably be willing to accept less in prospects from teams that can eat most of the balance of his deal(and the Pirates can).
Moving back to the NL probably wouldn't hurt him either.
He'd certainly be worth exploring.