Rak-Sakyi’s call-up comes after nine players left camp either through injury or promotion to the senior squad.
On loan at Sheffield United, the 22-year-old has impressed for Chris Wilder’s side, scoring twice for the Blades.
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The Southwark-born attacker, who is eligible to represent both Ghana and England, has previously featured for England Under-20s. However, his late call-up is his first inclusion for the Under-21s.
Under the guidance of interim boss Ben Futcher, the Under-21s confirmed their qualification for next summer’s Euros during the October international break. This month marks Futcher’s final two games in the role before England caretaker manager Lee Carsley returns to the Young Lions.
Looking towards preparations for the Euros in Slovakia, England face friendlies against Spain (Friday, 15th November) and the Netherlands (Monday, 18th November) in Cadiz and Almere.