For what? He said he wanted to come back but was convinced by others not to. I agree with his gut instincts on this. Perhaps, he knows himself best and what he needs to be successful in his long term career.
Having made the decision now, as I said in another post, I wish him the best. Before that final decision, I was trying to give the best advice I could. What I thought was in his long term interest. Some posters and even advisers forget about the insurance that the school could buy for him to cover the injury possibility, that some raised, as the reason he should go.