Klaas-Jan Huntelaar’s general manager Hordst Heldt has confirmed that his player has a £17m buy-out clause in his contract, which has put several clubs on red-alert. Huntelaar does have a €20m buyout clause, and the rich club can afford it,' Heldt told Bild. The Dutchman, 28, who has been on Arsenal’s radar for several seasons now, scored 29 times in 32 Bundesliga matches last season as Schalke finished third. The forward is back to his best after disappointing performances at AC Milan and Real Madrid. When he was playing for Ajax the Dutch striker netted 76 in 92 league games for them.