Chelsea have begun to make moves to target a new full-back this summer, after appearing to fail in their pursuit of Juventus left-back Alex Sandro. 

Sandro, whose brilliant first-time ball was instrumental in Mario Mandzukic's phenomenal goal in a losing cause in last season's Champions League final, looks to be staying put in Turin - with ​MailOnline Sport reporting that last season's Premier League champions have turned their attention to Real Madrid backup Danilo. 

The 25-year-old featured almost exclusively on the right for Los Blancos last season, providing backup to Dani Carvajal, but has been known to fill in on the left when necessary; giving manager Antonio Conte more options as the Blues approach a packed season in defence of their title. 

Marcos Alonso acquitted himself well in his first season at Stamford Bridge, while Victor Moses performed well at a right-sided wing-back, but a crippling lack of depth at both positions was exposed whenever either of the pair was unavailable. 

With the added pressures of a Champions League campaign to contend with next season, Conte looks to be moving quickly in the transfer market to secure at least one player who can challenge one or both of his current starters for their position in the first team. 

Danilo had previously been linked with a move to Juventus to play alongside fellow Chelsea target Sandro as their replacement for the departing Dani Alves on the right-hand side, but the arrival of Douglas Costa on Tuesday looks to have put paid to that transfer - with no move space for non-EU players in the Italian champions' squad.