a rule 5 draft pick must be on the active roster for at least 90 days for a team to retain his rights. wang achieved that in early july. wang has no minor league options this year (unless a trade is worked out by the pirates). if he remains on the brewers 40-man through spring training 2015, he will have three minor league options. but as outlined above, the brewers can send wang to the minors on a 30-day rehab assignment after his fifteenth day on the disabled list. he would still be earning major league service time and major league pay, and the brewers would still retain his rights. Yes to retain his rights they have to have him on the roster for 90 days. That doesn't mean in one season.