The Knicks drafted Quickley so now have 4 young PGs on the roster (Ntilikina, Smith, Payton also). You could certainly see them wanting to move one of these before adding Rozier. They also have 4 SG and 4 SF on the roster and under contract. They may actually be forced to open up a roster spot before taking on Rozier.
I don't mind taking something from the Knicks to allow us to get the TPE. We can cut Javonte Green as his contract is not guaranteed (not sure of deadlines for that), or maybe move him to Charlotte and they can cut him (that would help our TPE a little).
The player we get from the Knicks will cost more than Javonte Green but would probably be a more useful player.