Emmanuel Riviere is a target for Metz, according to a report in France.
Riviere, signed from Monaco three years ago, is not in manager Rafa Benitez's plans.
The 27-year-old spent last season on loan at Spanish club Osasuna.
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And L'Equipe today report that Riviere is a target for Metz.
Newcastle said Riviere had signed a "long-term contract" when he joined in the summer of 2014 in a £6million, but did not disclose the length of the deal.
L'Equipe claim that the former France Under-21 international has just a year left on his United deal.
Riviere has scored three goals for Newcastle, the last of which came against Queens Park Rangers in May 2015.
Benitez is keen to move a number of players, including Riviere, out of the club this summer.
Riviere reported back to Newcastle for the start of pre-season training last week.
It is not clear whether it will be involved in Friday night's friendly against Heart of Midlothian at Tynecastle.