I agree i think the AFLPA would not back the move, HOWEVER the AFL i believe will be very concerned about the unintended consequences of the FA. In that case the AFL have been pretty consistent in its desire to allow the even distribution of success amongst AFL clubs, and anything that compromises this would be seen as a priority to fix. Likewise most clubs would not be enjoying the new found power of the players, therefore the clubs as a general entity would be in favor of changes as well. Over-riding everything in any case is the best interests of the game and its betterment. The game must come first and always has. FA is a needed change, but it needs to be tamed. It would be very unreasonable for the AFLPA to not countenance any changes as it was introduced without massive thought and discussion. Now it is time for discussion and change.
The NFL model is the one that will be most closely looked at. To balance up the power of the player, the NFL brought in a rule that teams could trade any player IN contract to any team they liked...
The problem was fixed...!