Defensive back who made his Scottish Premiership debut with Celtic in 2014. He joined the Scottish national team in 2016.
A Celtic fan growing up, he joined the club's youth side when he was only seven years old.
He was named the PFA Scotland Player of the Year for the 2015-2016 season.
He's also stated interest in playing for Ellan Vannin, which represents the Isle of Man.
He and Scott Brown have played together on Celtic.