Terry Rozier is still under contract for another year. We should hold on to him for as long as we can, ideally into his next contract. Depending on how we think Irving is valued which includes this health, I would think Rozier is a great insurance policy. He is showing that he has great value. Let's not be quick to move him for something.
If we do decide that keeping Rozier is the better decision, it will be because Irving being injury-prone is too much or Rozier becomes a fringe all-star that is a cheaper option.