The left-back is in a contract dispute with his Dutch club and Voetbal International says he's skipped their training camp to fly to England.
"Because he has not reported on Monday, Jason has not fulfilled his obligations. From what I understand, he is in England looking for a new club," revealed chairman Jan Smit.
"Maybe that offers a solution."
Davidson is the son of former Australia and Nottingham Forest fullback Alan Davidson.
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