The free agent is ready to negotiate terms with his next club on his own, says The Sun.
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Calvert-Lewin, 28, has seen talks with Leeds United and Sunderland fall through over personal demands.
He has also been linked with Manchester United and Newcastle since choosing to leave Everton this summer.
For the moment, Calvert-Lewin is not in formal negotiations with any interested club and has been doing his preseason on is own.