The 28-year-old came off the bench in the 66th minute of Ahly’s goalless draw against Inter Miami in their Group A opener on Sunday and impressed during his time on the pitch. However, he has now joined the team’s growing injury list.
Ahly face Palmeiras on Thursday before wrapping up their group stage campaign against FC Porto four days later.
Taher becomes the third player ruled out through injury.
Midfielder Emam Ashour has already been sidelined for the remainder of the tournament with a fractured clavicle, while left-back Ahmed "Koka" Nabil will also miss at least the Palmeiras match due to a muscle issue.
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