No one can predict how the actual conversation will be. But, if handled well, he will feel better with by taking positive actions and move forward after the conversation.
Is there a big difference between sports coaching and professional coaching? The answer is, no big difference. But they are not exactly the same in many small ways.
Whether it is coaching, mentoring, training, or counselling, they are merely different leadership approaches. All of them advocate one common objective, i.e. improves human performance. Different folks different strokes. We do not have the best leadership approach, we only have a best-fit leadership approach to the situation you are dealing with.
Whether it is an individual or group, coaching is the way to go to build work-life integration, increase work performance, better communication skills, or increase productivity. Coaching drives a sense of ownership and helps the Coachee be self-accountable for greater performance.