I doubt there will be a coup. The generals are fat and happy, thanks to decades at the trough. The smart ones have sent their families abroad on extended vacations, funded by fat Swiss (or whatever their preferred haven) bank accounts. The ranks of the younger officers are probably thoroughly infiltrated by Islamists. Egypt’s problem is the suffocating socialism promoted by Nasser as the wave of the future in the 1950’s and the Islamism (whose current incarnation also favors socialism, mainly as a populist tool) that permeates the world views of just about the entire population. What general would want to take on this tar baby as Egypt’s latest pharaoh?
In situations like this it's the Colonels you have to keep an eye on.
We’re the generals fat and happy under Mubarak? Yep.
Have the generals been fat and happy under the Morsi? Yep.
The generals are going to be fat and happy regardless.