The case of Rozier is an odd one.
He really did take a leap at the end of last year. He always had intriguing talents, but he also had chronic problems as a player, and somehow those problems mostly evaporated for a few months. He had always dribbled too much and took bad shots. Lots of step back threes. His numbers were terrible. He could do some great stuff in bursts, but overall, he was a very inefficient player.
Then, he suddenly cut out the over dribbling and poor shot selection. He ran off the rebound, made decent decisions and kept the ball moving after probing the defense. His shot selection suddenly improved, and his numbers improved dramatically. He really was very good.
What is disorienting is that his bad habits returned in force this year, and they have stayed for the entire year. I could spot him a bad month or two but he's been awful for too long for this to be a phase.
He's got to go.