From what I read (I believe from a JR chat), the plan is to have Jaskin and Rattie start the year in Chicago. So with those two out of the picture, you'd have Aucoin, Lapierre, Sobotka, Porter all probably seeing some time at 4th line center.
My guess is that the CPR line will not be together to start the season. They were spark plugs for sure and they could chip in on some offense. Here is our roster breakdown as of today. If I missed anybody, let me know.
Chris Stewart (RFA)
Alex Pietrangelo (RFA)
Jake Allen (RFA)
We've got several guys who can split time between center/wing and depending on injuries/performance, I figure our bottom two lines will see guys bouncing around a bit. Not to mention if someone from the top 6 gets hurt, you could see someone like Boat or Paajarvi moving up. But to answer the original question, I think CPR is dead unless injury/performance necessitates they be put together again. That said, it's a nice fall back option if that does happen.