The 20-year-old is currently with Slovakia at the World Cup, but he ended last season on loan at Bolton and his agent, Juraj Venglos, has hinted that another temporary move could be on the cards.
Juraj Venglos: "On Newcastle, I only know what has been reported. We haven't heard anything yet.
"Things will only be decided after the World Cup and I don't know anything until then. Vladimir just wants to play football - and of course he wants to play at a big club.
"He must make the decision himself, though, and that will only come after the World Cup. We will see."