The teenager becomes the latest Blues man to venture out as the club send him to gain experience at one of their London rivals on a temporary deal
Jay Dasilva has left Chelsea for Charlton Athletic on loan after impressing in his 16 games for the Blues's Under-23 side this season.
Charlton made their first signing under new manager Karl Robinson as Dasilva took his first training session at his new club on Friday, and he will remain in south-east London until June 30.
The 18-year-old lifted the UEFA Youth League and FA Youth Cup last season, and he becomes Chelsea's 37th loan star after Charly Musonda and Kenedy returned from Real Betis and Watford respectively.