Top of my list: Kerby Rychel (rumblings CLB could move him for defensive help... which the Devils could provide...)
Kings' AHL affiliate seems like it has a handful of talented forwards that just may be victims to a numbers game at the NHL level, so they could be in play.
I was actually really bummed when Boston was able to pry Brett Connolly away from Tampa Bay -- he was the young forward who got pushed aside by other prospects and I was hoping somehow the Devils could be the ones to take a chance on him. Two 2nd rounders was too high for the Devils, though.
On a related note - there was a great article on TheScore discussing why moving Drouin is highly unlikely. Essentially, Yzerman was interested in moving up in the draft in 2013-2014 to snag Ekblad... but when Drouin and Vasilevskiy were brought up as necessary pieces for the deal, it was squashed.
Zack Kassian was another player I had thought could end up in NJ. Oh well.