Ronaldo will definitely miss the clash against Sevilla after picking up a knee injury in the Euro 2016 final.
Gareth Bale, Toni Kroos and Pepe all return from an extended holiday today due to their exploits at Euro 2016, but Zidane has doubted whether they will play in the Super Cup final.
When asked whether the trio would play in the match, he said: "No, I don't think so. They still have to come back. We will see in Madrid".
As for Benzema, the Real Madrid boss appears to be more positive about the striker's fitness.
"Karim will be with us and then we'll see. Let's hope he can play the Super Cup. He is doing better and he has trained with us," he said.
The potential absence of the 'BBC' in the Super Cup final could Zidane opt for a front three of James, Morata and Lucas Vasquez.