THE LIFE DERRICK ROSE wants back is three days away, and not a thing in the world but time can bring it any closer. He must endure a little more, leaning against the wall in the corner during a break in a photo shoot, alone, doing calf stretches then touching his toes. When action in the private gym resumes, he won’t dunk, rising until he hears the shutter click, then tucking the ball and landing as softly as he can. That’s one of the many lessons he learned during his time away. Every dunk costs something, a debt that will demand payment months, even years, from now. He’s about to turn 26. He wants to save his legs.