"Darmian plays very well. In the World Cup, he was maybe not the best player but more or less did a good job," Materazzi told Goal.com.
Materazzi also claimed that Darmian is the best wing-back in Italy.
He added: "He has a big opportunity with Manchester United to grow because he's a good player, he's playing for the national team and now for United.
"I think he's the best wing-back in Italy."
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