Ricardo warns De Gea to stay calm over Man Utd rumours
Ricardo, now with Osasuna, had three years at United.
"You have to be cautious with transfers, until they happen it's often better to say nothing and not talk about it. All I can say is that de Gea is a very reliable keeper and his career rise has been meteoric and he has dealt with everything very well," he told AS.
He added: "Last season he came to Osasuna with Atletico and I had the chance to talk to him. At the time he was a substitute behind Asenjo. Now he is the keeper of a great team like Atletico Madrid and he should also focus on enjoying it."