The club's general manager admits the teen sensation would could leave the Bundesliga side if a "crazy" offer came in, despite a rumoured release clause of £39 million
The 19-year-old was in scintillating form for the German outfit in the second leg of their Champions League playoff against PAOK on Tuesday night, scoring one and setting up another as the Bundesliga side edged through to the knockout stages of the competition 4-3 on aggregate.
But even that cash windfall will not stop Draxler leaving the Veltins Arena, with Heldt admitting the German international has his price.
"We're planning with Julian. But what would I say if a €70 million [£60.1m] offer came in?” Heldt told reporters.
“Everything else in this crazy football world is not for us to influence."
Despite Heldt putting forward that valuation of the player, it is thought Draxler has a release fee of €45.5m [£39m] in his contract, which runs out in 2018, with Real Madrid and Manchester City both rumoured to be interested in the Schalke academy graduate.