Kansas City's 40-man roster sits at 37.
Players taken in the Rule 5 Draft must remain on a team's 25-man roster the entire season or be returned to their former club. Players eligible to be taken in the Rule 5 Draft are those not on the 40-man roster signed at 19 or older who have played for four years, or those signed at 18 with five years of playing time.
The Royals have 40 players eligible for the Rule 5 Draft.