Sorry to say - But you are not the first to overrate our players. 15-18 is his worth, nothing more. Not as if he's won a couple of B&F's
Jock, he is worth what the market is willing to pay for him, not what individual supporters think he is worth. This is not an exact science. A player at his age who had won a couple of B&Fs would be worth an early first rounder so that part is irrelevant.
What is his skill level? Has he exhibited said skill level enough to confirm that is his skill level? What are his deficiencies and can they be overcome by going to a new team? Does the buyer have a need for him? Is he in contract? Is there a chance he will get us better compensation or equal compensation as a free agent next year? Is there a chance he lifts his performance next year if he stays?
All of that suggests we don't merely accept whatever is on offer for him.
Last year he was decent, his name was put forward for trade and half of us didn't want him to go even though they were talking having him involved in a Boyd deal. This year he is unhappy and not giving his all. His value could be argued forever and a day.