I was doing some research on Medieval Egypt and trying to figure out a way to keep it from being a province of the ottomans when I noticed that one of the Abbasids of Cairo managed to become the Sultan of Egypt briefly. Granted, he was a compromise between the various mamelukes and didn't last long before being overthrown by Shaykh al-Muayyad. However, lets say say Shaykh al-Muayyad suffers an accident that leaves him unable to overthrow Al-Musta'in. Could Al-Musta'in keep his position in Mameluke Egypt and possibly restore the Abbasids to power?