Huh? Aho, Trochek, Staal, Geekie, Necas and Martinook just on the NHL roster. Cotton, Mattheos, Bishop, Lorentz, Shore at the AHL level. If they need to fill in a 4C at any point in time, they are fine.
If Aho gets injured, the Canes are screwed with or without Riley Nash on the roster. There is no replacement for their 1C, much like many/most teams in the NHL.
If Tocheck gets injured, Jordan Staal is MORE than serviceable as a 2C. Acquiring Nash doesn't help.
If Staal gets injured (like he did in the season where the Canes went to the ECF), then the Canes still have Aho, Trocheck, Geekie, Necas and Martinook to pick and choose from to fill the void.
I'm not a Dzingel fan and understand why CLB doesn't want him, but Canes don't have a need or desire for Nash.