The Dutchman's representative has little doubts about the midfielder's quality, and feels he is the best player in his age group in Europe after his January switch to Serie A
The left-footed midfielder left Ajax for Juventus in the January transfer window, and Raiola is confident that the Netherlands Under-19 star will be a success at his new club.
"I have no doubts about his abilities. He is the biggest European talent born in 1993," Raiola was quoted as saying by Tuttosport.
"He is a very versatile midfielder. He has great vision and scores quite easily. He plays a bit like [AC Milan's Mark] van Bommel, but is more dangerous in front of goal. He's scored a lot at Ajax, and we will see how he does at Juventus."
The 18-year-old midfielder has a contract with Juventus until the summer of 2015.