Fiorentina won't sell Juan Cuadrado for a transfer fee under €50 million.
Cuadrado has received interest from Bayern Munich, Barcelona and Manchester United.
"If an offer of €50 million were to come in, we would be willing to open talks. But there's no such offer as of yet," Prade told Sky Sports 24.
"We hope that Cuadrado will continue to play for Fiorentina. There has not been an official offer for him.
"We are in constant contact with the player and his agent. He will return to the club on August 4 or 5. We will then talk with him."