"The appointment and the sacking of the defense minister come after the approval of the Supreme Council of the Armed Forces (SCAF)," reads Article 233 of the draft charter.
"This should apply to two full presidential terms from the day this constitution comes into effect," it added.
The 50-member committee assigned with amending Egypt's suspended constitution will vote on the final draft Saturday.
If approved, the draft will be sent to interim President Adly Mansour to call for a public referendum.
The Egyptian military suspended the 2012 constitution – approved last year via popular referendum – when it ousted elected president Mohamed Morsi on July 3.
Amending the charter is the first step of the army-imposed roadmap for the transition phase, which also includes parliamentary and presidential elections within nine months.