Mahlambi has been sanctioned by The Red Devils after he missed training on Friday without permission, the club have confirmed on their official website.
A statement read: 'Mohamed Youssef, general manager of Al Ahly Football Club and acting director of the football, said there was a financial penalty imposed on South African Phakamani Mahlambi for his absence from training without permission.
'Youssef added that the financial sanction signed by the player came in accordance with the rules of the internal team.
'Youssef pointed out that there is a meeting with the player's agent to discuss his position for the coming period.'
Mahlambi had been linked with a return to the PSL, with Mamelodi Sundowns understood to have been keen on snapping him up from the eight-time CAF Champions League winners.
The reports were sparked by the fact that the 20-year-old was ineligible for Al Ahly, after it emerged that they had exhausted their registration quota for foreigners.
However, a last minute injury to Nigerian striker Junior Ajayi gave way to the South African international's inclusion in coach Patrice Carteron's side, with his prospective exit subsequently put on hold.
The former Bidvest Wits winger was then left out of the matchday squad for Al Ahly's season opening encounter on Thursday, possibly aggrieving the player and resulting in him missing Friday's session.
Mahlambi's agent Glyn Binkin was unavailable for comment at the time of publishing.