7/4 UPDATE:
The Cubs have selected the contract of RHRP Daniel Palencia from AAA Iowa and he has been added to the MLB Reserve List (40-man roster).
Also, 1B Bryce Ball has been released.
Palencia was acquired from the Oakland A's for LHRP Andrew Chafin and Ball was acquired from the Atlanta Braves for OF Joc Pederson (both in July 2021).
7/1 UPDATE:
The Cubs have released AAA Iowa RHRP Jordan Holloway.
Holloway had a July 1st opt-out in his contract that he elected to exercise after the Cubs failed to add him to their MLB 40-man roster or trade him to a club that would add him to their MLB 40-man roster.