The pair are suspended for the tie at Orlando Stadium on September 26.
Coach Eric Tinkler could turn to Ayanda Gcaba and Tshepo Gumede in the duo's absence.
Meanwhile, holding midfielder Issa Sarr is doubtful for tomorrow's League clash with Mpumalanga Black Aces in Soweto.
The Senegalese is on compassionate leave following the death of his mother.