The 19-year-old centre-back is one of the hottest properties in Europe after playing a key role in Ajax's run to the Champions League semi-finals, with Juve, Barcelona and Manchester United all after his signature.
However, Raiola says his client has his heart set on a move to Turin and all that remains is for the two clubs to come to terms on the move.
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"Agreements have been with Matthijs and it is up to Ajax how the club deal with this," he told De Telegraaf.
"We will take a professional approach."
Raiola also revealed that Juventus' opening bid for the young Dutchman, believed to be in the region of €50 million was "too low".
De Ligt is rumoured to have agreed a five-year contract with the Serie A side, who have also signed the likes of Aaron Ramsey, Gianluigi Buffon and Adrien Rabiot this summer.
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