Shakhtar Donetsk star Douglas Costa is being linked with a move to England.
The Brazilian is reluctant to return to Ukraine over their problems with Russia.
"I'm afraid," he said. "Everything we read, see or hear about the country is not good. We totally do not know what kind of situation we have to train or play in."
Tottenham are also interested, but only on an initial loan arrangement.
Spurs chairman Daniel Levy has close ties with Shakhtar and discussed signing Douglas Costa last summer.
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