What do you mean? Granderson took Anzalone's spot when they IR'd him. Do you mean his position on the line? Because Granderson is a pure DE, not a NT by any stretch of the imagination.
No not position for position, just dline roster spot. Typically you allocate a quantity per position groups. I'm, not saying that Granderson is taking Stallworth's snaps or even that he will play at all this year.