The Cairo giants were due to face their Sudanese counterparts on February 11 or 12 in the first round of the group stage of the prestigious continental tournament.
According to the CAF press release, the match between supporters Ahly and Merriekh will be played on March 5.
The FIFA Club World Cup will take place from February 3-12 in the United Arab Emirates, with Ahly playing their opening match against Mexican side Monterrey on February 5.
10-time Champions League winners Ahly were drawn in Group A of the group stage alongside Mamelodi Sundowns (South Africa), Merriekh (Sudan) and Al-Hilal (Sudan).
Ahly currently leads the Egyptian Premier League table with 19 points from seven games, with one game still in play.
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