15/10/96 in Brussels, Belgium.
Also known as Charly Junior, with Charly being his father's name, Mus is the younger brother of Lamisha and Tika who are Chelsea Under-21 players.
He signed for the club last season having previously been at Anderlecht and is captain of the Belgian U17 side.
He can plays anywhere in midfield and is an exciting, technical player who scores and makes goals.
In his first year as a full-time scholar, he played in the FA Youth Cup final last season while still a schoolboy. His father is a former Zambian international and Anderlecht midfielder.