He can apply (deadline March 15th) and he can withdraw his app up to June 3rd. He will get refunded in July after the draw. All he will lose is the application fee. If He finds out he can go and there are leftover tags when they go on sale July 10th, the he can apply again then. Leftover doe tags go on salw July 17th. I have the same exact issue with my son but in July. Hope this helps !