EXCLUSIVE | By Arsenal correspondent Tony Hughes

Arsenal have revived talks with Galatasaray in a bid to sell Mathieu Flamini before the Turkish window shuts on Monday night, Football Insider sources understand.

The midfielder had agreed personal terms with Galatasaray earlier in the summer but the move stalled because he was unable to negotiate a severance package with the Gunners.

Football Insider has learned that Arsenal re-opened talks with Galatasaray on Monday but face a race against time to complete the deal before the Turkish window closes at midnight, 18 hours before the Premier League cut-off.

Flamini wanted Arsenal to pay him a portion of the final year of his contract to compensate for the reduced salary offered by the Turkish club. In July, he agreed the terms of a three-year deal with Galatasaray worth £60,000-a-week but held back on signing because he wanted a pay-off upwards of £1million.

Flamini’s current deal, which began in 2013, is a ‘two years plus one’ deal, with a 12-month extension running until 2016 automatically triggered when he reached the 25-appearance mark last season. In total the Frenchman played 33 matches for the Gunners in 2014-15.

Football Insider first revealed in April that Flamini was heading for the Emirates Stadium exit after plans to hold talks on a contract extension stalled. He was then informed at the end of last season that he could find another club.

The Frenchman, who turned 31 in March, is regarded by Arsene Wenger as surplus to requirements at Emirates Stadium. Flamini has been on the fringes since Francis Coquelin returned from a loan spell at Charlton Athletic last December to cement his place in Wenger’s team.

At that point, Arsenal were willing to open negotiations with Flamini on an extension but Wenger handed Coquelin a new contract and has explored signing a midfield anchorman this summer to compete with the 24-year-old Frenchman.

Flamini spent four years with the Gunners from 2004-2008 before re-joining in 2013 after five years at AC Milan.