Chelsea have reportedly made an approach for Barcelona full-back Sergino Dest, who is out of favour at the Nou Camp under Xavi.
Thomas Tuchel is keen to bolster his options on the right-hand side of defence, with Cesar Azpilicueta out of contract at Stamford Bridge at the end of the campaign.
Reece James has been first choice this season, scoring four goals and registering five assists in 16 Premier League appearances, but the Blues want more cover.
According to SPORT, Tuchel's No 1 target is 21-year-old Dest, who joined Barcelona from Ajax in October 2020 and has made 57 appearances for the Catalan side.