Without getting into a long winded argument there are a couple of points that need to be made. There are quite strict rules in relation to player contracts and coercion. You cannot in any way shape or form push a player into signing a contract. The players contracts are lodged with the AFL and all expire on the same day, at or near the end of the trading period. Again, Adelaide could have spoken to PD and discussed a trade a year earlier to Melbourne. It still has to be his decision. You cannot force or coerce the player to go. About the only real action the club can legitimately make is to choose not to pick them to play. A player is perfectly within their rights to put off any contract discussion until the end of the season.