Regardless of who is the GM, there is very little chance that any of O'Reilly, Bunting, Acciardi, Kerfoot, Kampf, Holl and Schenn are returning.
For O'Reilly, Kampf and Schenn I think it's a matter of choosing a better situation. For Bunting, he needs to take the best contract, this is his moment to set himself up for life. Kerfoot's and Holl's times with the team have passed their sell by date.
I don't think Samsonov will be qualified because he's far too uncertain in terms of performance and health to make a large financial investment into. I guess he could always re-sign after becoming a free agent and finding out his market value as an oft-injured erratic yet talented NHL goalie. Murray is obviously also gone-zo after having the rookie given two starts over him.
Do not be surprised that some of the reasonably priced carry over Dubas acquisitions (McCabe, Jarnkrok, Lafferty, Giordano) also don't survive if there is a new boss.