If he clears waivers no he would not need to be added to the 40 man, but then he'd be eligible to be taken in the Rule 5 draft. Wang was one 1 of 2 left handed starting pitchers currently in the system that can work in the low 90s with regularity, it's way too early for people to be giving up on him considering his lack of experience. Yes we have Kirby coming, but he likely won't work as a starter until next season and has control issues himself. So we lose him now or place him back on the 40 man roster in the winter gaining nothing or we lose him in the rule 5 draft(possibly in the minor league portion where the team would not have to keep him in the majors) or less likely he does not get picked up anywhere. I can't believe he was the worst player on the 40 man roster.