Real Madrid is not sure when Cristiano Ronaldo and Karim Benzema will return from their injuries.

Ronaldo will miss their La Liga opener against Real Sociedad but they're hopeful of him playing next week.

Ronaldo is still working his way back from a knee injury.

"I cannot give you a concrete date as to when Ronaldo will be back. He has returned to the pitch and is training with the ball, which is a good sign," Zinedine Zidane said in a media conference on Saturday.

"The most important thing is the way he feels. He could be ready to make his return against Celta. Next week will be important for his recovery.

"He is desperate to return as soon as possible. I am happy to see him training again.

"We have not thought about asking Portugal not to call him up for the international games yet. We have time to think about that after the game [against Sociedad]."