Greene is a weird case. Huge injury risk, more than an average pitcher, and he has been straight up awful outside of his start against the Cubs. But he's still only 26 and has two plus-plus pitches. No idea what the Reds would ask for him.
Latest update today is Harvey and Palencia are progressing well and could start rehab during the Dodgers series. No progression on Brown, probably still having symptoms. Steele is starting bullpens in August.