Borussia Dortmund chief Michael Zorc insists Pierre-Emerick Aubameyang is not for sale.
The Gabon star has been linked with Manchester City and Atletico Madrid.
Reports about the striker's future resurfaced over the weekend, leading to Dortmund sporting director Zorc has moved to reiterate the club's stance.
“All these rumours have already followed us this summer," he told Bild.