Egypt's soccer federation said it would ban the player, Ahmed Abdel Zaher, from competing until an investigation is completed.
After scoring a goal, Zaher displayed the four-finger Muslim Brotherhood signal that symbolises a raid by security forces on a pro-Morsi protest camp in Cairo in August that killed hundreds of Islamists.
The army overthrew Morsi on July 3 and installed an interim government. It has since launched a security crackdown on Morsi's Muslim Brotherhood, arresting more than 2,000 members, including Morsi and other senior leaders. Security forces have killed hundreds of Morsi supporters.