The Spanish capital club's hierarchy is keen to install Courtois as Real’s undisputed No.1, having picked up the Belgian shot-stopper at a reduced price as he entered the final year of his contract at Chelsea, goal.com reported.
Navas is no stranger to fighting for a starting spot at the Santiago Bernabeu, consistently having had to train hard to prove his worth during five successful years in Madrid. With Courtois five years his junior, however, Real is eager to stick to its plans for the future.
On Saturday, Zidane did confirm that he has spoken to 32-year-old Navas but refused to shed any light on what was discussed.
“Could it be Keylor's last game? I don't think so, nor do I want to think about next season either,” the French boss said.
“There are many rumors about what's going to happen but I'm not going to say anything. Nobody knows what I said to Keylor except him and me.
“I will be clear about who will play when the next season starts. It's my decision. Who do you think is in charge of this team? It's clear as water: I'm the coach, I will always do what I want and if I can't then I'll quit. That's clear.
“With the transfer issues, there are people here at the club and we all work together. But the team, choosing the lineup, the bench, the squad... that's me and my staff.
“[Antoine] Griezmann to Real Madrid? I'm not going to talk about that. [Luka] Jovic to Real? I'm not going to talk about that either. Isco's future? I'm not going to say anything.
“Are there no questions about the game tomorrow?”
Real Madrid takes in its final match of the Liga season today, hosting Real Betis while marooned in third place with nothing to play for after a dismal season by its own high standards.