Spanish sides Real Sociedad and Athletic Bilbao are set to pounce on Chelsea defender Cesar Azpilicueta, 30, if he becomes available.

Barcelona have sent their sporting director and scout to watch three Chelsea players - defenders Cesar Azpilicueta, 27, Marcos Alonso, 26, and 28-year-old midfielder Nemanja Matic

Barcelona are scouting Chelsea trio Marcos Alonso, Cesar Azpilicueta and Nemanja Matic, as well as Arsenal right-back Hector Bellerin, in preparation for a summer overhaul when current boss Luis Enrique departs

Chelsea full-back Cesar Azpilicueta, 26, is a target for Barcelona following the departure of 33-year-old Dani Alves

Real Madrid are said to be interested in Manchester City right-back Pablo Zabaleta, 28, as an alternative if a proposed bid for Chelsea's Cesar Azpilicueta, 24, fails in the January transfer window.