I'd love the hometown boy back:
Greene for Pulkkinen, Kindl/Quincey, and negotiable draft pick.
Pulkkinen is by all accounts our best offensive forward that has yet to get called up (leading the AHL team in points and really having a strong season - his first full season in North America after doing some great things in Finland shortly after being drafted.) He dropped to the 4th round, but was once considered one of the top talents of his draft class. His skating was an issue, but by all accounts it's no longer. Detroit thought highly of him as they did not want to trade him in previously speculated deals as reported by the media.
Defencemen Kindl or Quincey would have to be unloaded for cap reasons, unless you wanted and could get forward Samuelsson to waive his no trade clause. Quincey is a free agent after this season so there's no commitment there, while Kindl has years remaining. Kindl also has more potential upside at this point and had a very nice season last year, but has taken a step back this year. Some believe he needs a change of scenery.
Negotiable draft pick, because I'm not really sure of Greene's value right now. Yes he's NJ's #1 at the moment, but where would he fall into most teams' depth charts. He certainly doesn't have the value of most #1s and he'd be a 2nd pairing guy alongside another Michigan native in Dekeyser for the Red Wings.