Zidane reveals Ronaldo's favourite position on the pitch
"He's always played out on the flank," Zidane said in a press conference.
"That's his natural position. I'm sure he will score goals. He can play in a variety of positions because he's an outstanding player. But he prefers playing out on the wing. That's where he's scored 300, 400 goals?," he added.
Furthermore he talked about his side's matches this week.
"I think it was a cup game if I'm not mistaken," he said of Ronaldo's previous unforced absence.
"And I'm pretty sure there'll be another game or two when he'll be rested. But he'll play on Wednesday, definitely."
As speculation mounts over the future of Madrid's fringe players, Zidane welcomed comments from James Rodriguez last week in which the Colombia international stated his desire to remain in the Spanish capital.
"I value what he's doing now, when he plays," he said. "He's doing very well. His contribution has been good.
"He can get the best out of his team-mates. I'm happy that he came out the other day to say he wants to stay at the club."
Finally, the coach would not confirm if Gareth Bale, who made a goal-scoring return from injury off the bench against Espanyol, will feature at Mestalla.
"You'll find out on Wednesday. He's happy, in great shape, but we'll have to wait and see."