I don't think these are going to be easy trade talks, because I'm not sure the holdup has been his NMC, but rather the contract and Chicago's unwillingness to retain so much for so long to facilitate a trade.
I think they'd retain a little, but doubt that gets them to a point where teams are interested. I get the sense that Chicago thinks that if it starts contemplating heavy retention, then a heavily retained Jones should be really valuable. Yet I think other clubs view that as the bare minimum needed to get them to consider acquiring him, not reason to fork over a king's ransom.
There seems to be room between where the Blackhawks value a heavily retained Jones for five more years and where the rest of the league values that package. There's a decent chance they hold on to him. His increasingly clear desire for a trade might not matter very much.
Retention is simple for pending UFAs. It's a hell of a lot more complicated when it's for multiple years. Heavy retention over five years on a big contract? It's rarer than people think.