Probably this. Who’s WR corps is Zay making better at this point? (Okay, maybe ours.) I’m pretty sure that teams would rather use that roster spot on a player who might reasonably develop rather than a third year player who hasn’t yet. Shady might have some trade value from the right team in the right situation, but that probably won’t be until the season is under way and some contending team loses its feature back and wants a veteran.