In September 2022, Saad signed for Al Ahly on a five-year deal.[2] He suffered an injury shortly after joining Al Ahly, keeping him out for three weeks and disrupting his integration into the first team.[3] Despite this injury, manager Marcel Koller promised Saad in November 2022 that he would receive more game time.[4]
In January 2023, Saad asked to leave Al Ahly on loan, due to a lack of playing time, with a number of Egyptian Premier League sides interested, including former club Ceramica Cleopatra.[5][6] He was eventually loaned to Smouha, thanking manager Ahmed Samy for giving him his debut against ENPPI, despite not yet having trained with the squad.[3]
^"كولر يعد مصطفى سعد بفرصة كاملة في الأهلي" [Kohler promises Mustafa Saad a full opportunity in Al-Ahly]. nabd-elwatan.com (in Arabic). 6 November 2022. Retrieved 9 March 2023.