Barcelona French international joined Catalan club in 2014

Aiming to shore up a porous back-line, Besiktas have set their sights on Barcelona left-footed centre-back Jeremy Mathieu, offering 7 million euros for his services.

The 32-year-old has consistently been Luis Enrique's third choice at centre-back behind Gerard Pique and Javier Mascherano, but ahead of Thomas Vermaelen and the now departed Marc Bartra in terms of rotation.

According to NTVSpor, Besiktas are interested in the French player because they expect his role will be diminished after the Blaugrana just acquired fellow Frenchmen Samuel Umtiti and Lucas Digne, both of them being almost a decade younger than the ex-Valencia player.

Due to presumptive lack of playing time, Mathieu would be keen to leave Catalunya less than two years after Barcelona paid 20m euros to Los Ches.

However, the veteran defender may be reluctant to joining Besiktas following the recent coup d'etat that took place in Turkey.