[AZ Central] Diamondbacks extend qualifying offer to Christian Walker - Walker has to choose whether to accept or decline the qualifying offer, which amounts to a one-year, $21.05 million deal. If he takes it, he would lock in a hefty salary and would be prohibited from receiving such an offer in the future. However, he would then be tackling free agency one year older. If he declines, he would enter the market somewhat encumbered: Teams that sign a player who turns down a qualifying offer are subject to penalties in the form of forfeiting a draft pick or the loss of international bonus pool money.