I will disagree with the suggestion that he needs more velo. That is excellent velo for a submariner.
The big issue is always command. If he has command, velo is practically irrelevant for this type of guy.
My experience is that some coaches think this is a gimmick, while others pine to have one on their rosters at all times if only they could find one. The latter category will make him a hot commodity. I would suggest he just needs to hit the summer exposure circuit -- ASAP.
If he's anywhere near VA, I can help with that.