Schalke chief Horst Heldt admits Lewis Holtby is unsettled at Tottenham.
The midfielder has been linked with a return to former club Schalke this month.
"We are in contact with Lewis, who has never lost contact with us. I feel he is currently not quite well in London," Heldt told WAZ.
"The discussions are not advanced. The transfer is financially not in our range."
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