The New Orleans Saints carved out another $4 million in salary-cap space by converting offensive tackle Terron Armstead $5 million roster bonus into a signing bonus. But that doesn’t automatically signal that a big move is coming (like, say, the possible addition of New England Patriots cornerback Malcolm Butler).
Converting Armstead’s bonus was a simple move that the Saints typically do every year with players who have big roster bonuses. By switching it to a signing bonus they can spread out the cap hit over five years instead of one.