Once again just as a reminder, players can - NOT - be non-tendered to open up slots on the 40-man roster for players eligible for selection in the Rule 5 Draft. The only day of the year when a player can be non-tendered is December 2nd, and the roster filing deadline for players eligible for selection in the Rule 5 Draft is November 19th.
What non-tendering a player on 12/2 does buy a club is a roster slot that can be used for signing a free-agent to a major league contract, an off-season waiver claim, or possibly selecting a player in the Major League Phase of the Rule 5 Draft (and the Cubs have the #7 pick in the Rule 5 Draft this year).