12/17 UPDATE:
The Cubs have signed free-agent RHP Mark Leiter Jr, INF Dixon Machado, and INF Ildemaro Vargas to 2022 minor league contracts.
Should they be added to the MLB 40-man roster at some point during the 2022 season, Machado and Vargas are out of minor league options, and Leiter, Machado, and Vargas have the right to elect free-agency if outrighted.
They also will be eligible for selection in the Major League Phase of the 2021 MLB Rule 5 Draft, whenever it takes place.
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12/8 UPDATE:
PLAYERS SELECTED BY CUBS IN AAA PHASE OF 2021 RULE 5 DRAFT:
Connor Menez, LHP (selected by Cubs for AAA Iowa affiliate from San Francisco Giants Domestic Reserve List)
CUBS MINOR LEAGUERS SELECTED IN AAA PHASE OF 2021 RULE 5 DRAFT:
Carlos Ocampo, RHP (selected by New York Mets for AAA Syracuse affiliate from Cubs Domestic Reserve List)
All players selected in the AAA Phase of the 2021 MLB Rule 5 Draft will be eligible for selection in the Major League Phase, whenever it takes place.