Wednesday's Sun reported the Magpies were lining up a move for the 23-year-old after being impressed by his performances during Euro 2008.
"I am in HSV now and I am concentrating on the new season," De Jong told Spox. "Everything else, whether there are other offers, does not interest me.
"Sure, if you have a good European Championship then it's easy to get one or the other offer but, for me, this is not so important.
"I am just focused on HSV."