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Yohan Cabaye may quit Newcastle for as little as £6million in the summer - and the Geordies are taking a big financial risk by keeping him for the remainder of the season.

France international Cabaye could be entitled to buy out the last two years of his five-year contract under FIFA's Webster Rule - so the Magpies might miss out of the £20million-plus they value him at unless they sell in this window.

Cabaye has a £60,000 a week deal which runs until June 2016 but, Article 17 of FIFA's transfer rules say the midfielder (and other players in his situation who were under 28 when they signed) can cancel the contract "without just cause", pay his employers the remaining value of his deal and move elsewhere on a free.

Newcastle benefited from the Webster Rule when they signed Jonas Gutierrez on the cheap from Spanish side Mallorca in 2008.

The club refused to comment on Thursday over whether they had a deal in place which prevented Cabaye using this option.

Cabaye's plans beyond the World Cup in Brazil are uncertain, but using the Webster Rule would widen the number of clubs scrambling for his signature - and potentially land him a bigger salary.

The 27-year-old went on strike in August after Arsenal's £10m bid was rejected by Newcastle owner Mike Ashley, who wanted double that sum, but he has been back on top form since returning to Alan Pardew's team.

Laurent Blanc, boss of French champions Paris Saint-Germain, is a fan, but Arsenal boss Arsene Wenger has ruled out a fresh bid this month, saying he has enough creative midfielders.

Newcastle have an interest in Remy Cabella of Montpellier in case they lose Cabaye.

Meanwhile, Toon outcast Sylvain Marveaux is ready to consider his options after falling out of Pardew's first-team plans. The French winger says he is fit and ready to play but isn't being picked by Pardew. While not actively seeking a move, he will see if any new options come up.

Newcastle have scouted Lyon midfielder Gueida Fofana and Sochaux striker Cedric Bakambu, who were on a list discussed by Pardew, chief scout Graham Carr and firector of football Joe Kinnear.