"I have not read the newspapers, but it is a big surprise for me, because I have not spoken with anybody," De Assis said in El Mundo Deportivo.
"I cannot receive offers. The only one who can receive them are Barcelona."
De Assis said the Ronaldinho, who has a contract with Barca until 2010, has a "fantastic relationship" with the Catalan giants.
"He is very well, very calm," added De Assis.
"Every Wednesday and every Sunday they write another story and everything changes very quickly in football. He is a professional who is used to these goings on in football."