I agree Zeller needs more minutes, he also could use a good motivator. He'll never be a great big man, but he has some nice qualities, he gets his shot off very quickly and easily, he can hit the face up 15-18 foot shot, he really understands the pick concepts well. On the D side, he needs to be more aggressive and assertive, but that should come with confidence and years. His body language is generally weak. He should work on ball handling and think about minutes at Power Forward.
I actually feel he has more up side as he grows in years.