BILD says Liverpool and Manchester United have been following the youngster this season.
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Schicker is clear that something extra will be required to buy Touré.
"Bazou has developed very well. We brought him from Sweden a year and a half ago. You can see week after week what qualities he brings," he told Sky Deutschland
"With him it's like this: if there is interest - and it's noticeable because he delivers every week - then it has to be at a level that Hoffenheim has not seen before."
Touré has a contract that runs until the summer of 2029.