The vote was scheduled for Friday, but Ald. Tom Tunney announced the vote would not happen that afternoon.
Final approval could still be months away.
SEE ALSO | Casino near Illinois-Wisconsin line to create 4.3K jobs as officials debate Chicago Bally's site
Last week, residents pushed back on a proposal they worry will increase traffic and crime.
Mayor Lori Lightfoot announced the Bally's proposal as her final selection for a Chicago casino earlier this month.
The development would replace the Chicago Tribune printing plant along the Chicago River at Chicago Avenue and Halsted Street in River West.