Corriere dello Sport says Ruiz's agent has also revealed that Real Madrid have shown interest in the Spain international.
Torres told Canal Sur: "It's obvious that there are many important clubs that have asked about him, he has spent three years at a high level.
"Yes, it's true that Real has shown interest, we told Napoli.
"But right now, he must focus on his team. This summer, we will see. He is a midfielder who will mark an era."