|Date of birth:||
April 25, 1996
Henderson joined Celtic as a youth and progressed through the club's development squad before making his competitive first team debut in December 2013. He played in Celtic's winning 2015 Scottish League Cup Final team, before going out on three-month loan to Tippeligaen side Rosenborg. The Norwegian club went on to win a domestic league and cup double, and Henderson played enough games for him to earn winner's medals in both competitions. He then went on loan to Hibernian for most of the 2015–16 season, helping the club win the 2015–16 Scottish Cup. Henderson then rejoined the Celtic squad, but made few first appearances.
Henderson has represented Scotland at various youth levels, including captaining the under-17 team.