The 19-year-old joined the Blues from West Ham United during his Under-15s season and has continued to impress on and off the pitch while progressing through the ranks at Cobham.

McMahon was a key part of our Under-18s side during the 2023/24 campaign, featuring in 18 of our 24 league matches, as the team won the southern section of the Under-18 Premier League.

Last season, the midfielder stepped up to become a consistent performer for our Under-21s, making 22 appearances in all competitions and captaining the side on six occasions.

In 2025/26, McMahon has played every minute in the Premier League 2, helping Chelsea Under-21s secure maximum points from our three fixtures in that competition so far.

Congratulations, Harrison!