Aaron, 19, has signed a seven-year contract at Stamford Bridge but will initially continue his development in his native Argentina, where we look forward to monitoring and supporting him in his progress.

Aaron spent time in the youth ranks of Juventud Unida and Sportivo Realico before joining Boca at the age of 12.

He signed his first professional contract with the club on 10 June 2023, and was handed his first-team debut against Lanus on the same day.

The centre-back has gone on to make nine further appearances for Boca and scored his first senior goal for the club in April, a winner in the Copa Sudamericana group stage against Trinidense.

Welcome to Chelsea and good luck on loan, Aaron!