Juve are being linked with the Dutchman as they seek a long-term replacement for Gigi Buffon.
"At this moment I cannot say anything, Juventus have made no official request," agent Kamil Cira told TuttoJuve.com.
"Tim Krul is very happy now at Newcastle and talk about possible transfers does not make sense.
"He is a young player of Newcastle and his market value at the moment cannot be quantified."
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