It has been reported that Klaas-Jan Huntelaar has again failed to rule out leaving Schalke this summer.
The Dutch international is being tracked by Manchester United, Tottenham and Liverpool, among several European heavyweights.
“I cannot express as a percentage of how likely it is that I stay here,” he told BILD.
“I’m now 28, which is the time when a footballer is at the top of his game. And of course, the time of when you should be getting your best contract – though winning titles is also important.”