Jeremy Mathieu is rumoured to be on Liverpool's transfer target list as Jurgen Klopp continues to look to strengthen his defensive options ahead of next season.
Le Parisien claims that the German coach is looking for an experienced player to reinforce the centre-back position, with the Reds deciding not to renew Kolo Toure's contract and Martin Skrtel departed for Fenerbahce.
Mathieu is also wanted by Besiktas, who allegedly made a formal seven million euros offer during the last few days.
Barça's acquisition of fellow French compatriots Samuel Umtiti and Lucas Digne means that the club now have a plethora of players all wanting to take up the same position in Luis Enrique's starting 11. Teams across Europe have, therefore, been put on red alert over potentially more defensive departures for the Blaugrana.
While Besiktas' offer has unconvinced the former Valencia man, the chance to play in the Premier League is an option that is hard to turn down.