Schuster says Ramos aggravated an injury because of his commitment to the Spain cause, a claim which was denied by coach Vicente del Bosque before Real's victory over Numancia last night.
Asked about Del Bosque's comments, Schuster would only say: "Ramos will be okay ..."
The media throng then pressed Schuster on how he knew that Ramos was injured - despite the denials - before he joined up with Spain last week.
"You do not tell me your informers, therefore I'm not going to say mine," snapped Schuster.
Ramos has already complained this year about his treatment by Real management after a rash of bookings late last season.