He's not a rookie anymore who does not know any American culture, language, NBA game etc. It's his 3rd year and he's gotta give something back to Jazz. I am the one who's been following him since his youth team but ı was really not expecting him to play that bad in his 3rd year. He's regressing in all areas he was good before (Boxing out, rebounding, post up defense, post up offense, not being able to draw any foul etc.) It's professional world and potential should not be just any excuse for him, he just gotta make it happen.