Borussia Dortmund CEO Hans-Joachim Watzke has admitted the Bundesliga club would listen to "realistic offers" for star striker Pierre-Emerick Aubameyang.
The Gabon international secured the league's Golden Boot for his 31 goals in 32 league matches for Dortmund last season, edging out FC Bayern München's Robert Lewandowski.
As such, the 28-year-old has become a top transfer target for a number of European clubs.
But Watzke says they will only consider letting Aubameyang leave if any potential suitors match their €70million valuation for the prolific striker.
Real Madrid, Paris Saint-Germain and Manchester City have all inquired about Aubameyang, with City now leading the chase after PSG reportedly turned their attentions elsewhere.
Watzke told Bild: "We will listen to it when a club is willing to show its appreciation for Aubameyang in a financial way as well."
Aubameyang is contracted to Dortmund until June 2020.