Newcastle have not made any approach for Sporting Lisbon's Chile international Matias Fernandez, according to his agent.
Reports have suggested that the Premier League club are planning a January bid for the attacking midfielder in order to add some creativity.
But Fernandez's agent, Alejandro Santiesteban, has yet to hear from representatives of Newcastle regarding the 24-year-old.
"I'm not aware of the reported interest in Matias from Newcastle," Santiesteban told Portuguese media.
"Nobody has got in touch with me so I think it must be a rumour.
"If a team is really interested in a player and has to pay a transfer fee then they have to get in touch with me and the club. That hasn't happened."
Fernandez is under contract at Sporting until 2014 and is believed to be valued at £20million.