I am inclined to think Coleman's abilities are what they are, and that isn't that great.
BUT, I could be wrong. Maybe his problem is a mental block of some kind. It occurs to me that the team psychologist (Dr. Desaree Festa) could work on his psyche. That is what she is advertised to do:
"Mental health is something that we really value here," Festa said of the belief and buy in from the team. "My job as the team psychologist is to help optimize players' mental space on the field as well as off the field. Thus, the goal is to take care of both the athlete and the person in their mental, emotional, and relational well-being because we know that healthier athletes off the field are healthier athletes on the field and vice versa. My goal is to help support the whole player, both performer and person." (link)
Maybe she can turn Coleman into a performer.