Mathias, now with Manchego, told El Chiringuito TV when shown a headline from England in which Sergio Ramos has admitted to being a big fan of his brother: "I know he's spoken with a few players, but not Ramos.
"Who? Oh, Messi. Sometimes, not always. Zlatan [Ibrahimovic]. Griezmann, because of the national team."
However, Mathias has admitted that some figures from the Bernabeu have made contact through the French national team.
Mathias added: "I don't know about anyone from Real Madrid. Oh, [Raphael] Varane, yes, and yes, with [Zinedine] Zidane, yes."