The 28-year-old has been linked with the likes of Tottenham, Arsenal and Manchester United in the past.
Heldt has confirmed that Huntelaar has a €20million release clause in his contract.
“Huntelaar does have a €20 million buyout clause, and the rich club can afford it,” Heldt told Bild.
“But, Klaas Jan has always stressed that he wants to be a champion. This he can be only with Real or Barcelona in Spain.
“I do not think he wants to go there. What would he do there? Since nothing more than the weather is better.”
