The government already has a program for “voluntary relinquishment”, to use the government's language from the B.C. case. It's the willing buyer, willing seller approach.
There are some questions. How willing is the seller if they're not given much of an option? If the government wants to reallocate a certain fishery for reconciliation, then it should come to that fishery, to the participants, and talk to them about what amounts would be desired for reallocation. Perhaps the fishery participants themselves can figure out who may want to exit and who may want to sell to the government, but giving participants no choice I don't think is the best approach.