Sorry I am late replying to this. If Conforto is signed next year (given that he had surgery and is out), he will not require compensation because the rule only applies to players tendered an offer who sign before the next draft (which is in July). A healthy Conforto absolutely would have gotten a pick, but given the tweet from Rosenthal, it would be stupid to offer him a deal before the draft (OTOH, making an offer right after the draft offering him some compensation this year could potentially be a smart move).