Abdel-Aal recently waxed lyrical about his managerial abilities and lauded himself as 'the best in the second division' before launching an attack on Mosimane.
"Everyone thought that the team with Reda Abdel Aal would compete to ascend to the top flight in the current season, and this did not happen," the club president told Masrway.
"The fans have nothing to do with the team's bad results, but on the contrary, the fans want the team to win and perform well."
Oreibi went on to confirm that technical director Alaa Saber has been selected to replace Abdel-Aal at the 92-year-old institution.