I don't think they can trade Duchene's rights because if he's resigned by that team CBJ will still have to send Ottawa a 1st...
I can see you getting something small for Bobrovsky or Panarin but not Duchene (will cost the Jackets) or Dzingel (won't be that sought after).
It should be exciting though... CBJ may do something crazy! - riceroni
Honesty not sure how the Duchene condition would work. IF he could be signed by a team other then CBJ without penalty (1st to OTT) they would try to trade him. If the penalty applies to any team that would sign him before July 1 it would not make sense.