The 36-year-old defender, who won two Premier League titles and a Champions League with Chelsea, was capped 44 times by Spain.
Experienced Spain defender Cesar Azpilicueta said Saturday he was excited by the squad's "bold" youngsters as La Roja set their sights on a second World Cup crown.
Real Madrid face Chelsea in the Champions League quarterfinals second-leg tie at the Estadio Santiago Bernabeu in Madrid.
Recent Club World Cup winners Chelsea are heavy favourites to beat Lille in their Champions League last-16 tie as Thomas Tuchel's side look to retain the title they won by beating Manchester City in last season's final
Club World Cup: Kai Havertz, the hero in the Champions League final against Manchester City, was Chelsea's match-winner again as he converted a penalty on 117 minutes awarded following a VAR review
Chelsea captain Cesar Azpilicueta has urged his teammates to show an immediate response after falling off the top of the Premier League and finishing a disappointing second in their Champions League group.
Zlatan Ibrahimovic somehow escaped getting sent-off during Sweden's World Cup qualifier against Spain despite a brutal shoulder barge on full-back Cesar Azpilicueta.
Euro 2020: Spain beat Croatia 5-3 after extra time in their Round of 16 match to reach the quarter-finals.
Chelsea captain Cesar Azpilicueta called N'Golo Kante "the best in the world" as the club celebrated a second Champions League title after a 1-0 win over Manchester City in the final on Sunday.
Premier League: Table-toppers Manchester City face Chelsea in their upcoming fixture at the Etihad Stadium. Both teams will also face each other in the Champions League final.