The Frenchman made 36 appearances for Newcastle last season as the Magpies reached the quarter-finals of the Europa League.
However, according to L'Equipe, Olympiacos are keen to sign the 27-year-old on a season-long loan deal.
Marveaux has a contract at the club until 2016.
Mike Ashley has made it known "all players have a price", but how would Newcastle benefit from a loan deal?
He's not a kid coming through the ranks looking for experience, he's 27 and at his prime.
If he isn't part of Alan Pardew's plans . he should move on . for a price.
Source: Newcastle United Mad