You will notice teams shuffling around players in minor trades in an attempt to get their 40-man rosters in order this week. To be protected from the Rule 5 draft in December, eligible players must be added to the 40-man roster by this Tuesday. Eligible players include college players drafted in 2015 or earlier and high school and international players signed in 2014 or earlier (although there are some clever loopholes that the Rays discovered).
The Royals currently have 37 players on their 40-man roster, which gives them the opportunity to add three players. Of course, they would probably like to leave one or two spots open for the Rule 5 draft to make a selection, as they found a gem like Brad Keller in last year’s draft.