Saturday's game was initially delayed until Sunday after River Plate supporters attacked the Boca Juniors team bus, before being postponed.
A statement from South American football's governing body Conmebol said a date and venue would be decided "as soon as possible".
Conmebol president Alejandro Dominguez met with the presidents of both clubs on Tuesday.
The fixture had been poised as the biggest club match in the 127-year history of Argentine football.
But it was marred by the "shameful" attack in which Boca players suffered cuts from the glass from broken windows, and were also affected by the tear gas used by police to disperse the crowds.