After the Detroit Lions' second preseason game, head coach Dan Campbell basically declared the battle for the No. 2 quarterback spot was over. Kyle Allen will be the guy, barring a surprising late preseason pivot, and Hendon Hooker's future with the team is now a confirmed question.
Since the start of training camp, if not before, it has made no sense for the Lions to keep Hooker as the No. 3 quarterback if he was unable to beat out Allen. Spots on the 53-man roster are too precious for them to carry three quarterbacks, so Hooker would then become trade bait or an obvious (to most people) cut.