Date of birth
Hessenthaler, son of former Gills player and manager Andy, forced his way in to first team consideration following the arrival of Peter Taylor in October 2013.
He soon became a regular in the starting XI, scoring an incredible first goal for the club from just inside the halfway line in a 4-2 victory against Coventry City at the MEMS Priestfield Stadium in March 2014.
Having begun his youth career at Chelsea, Hessenthaler was released by the London club and joined Gills as a teenager, progressing through the system with the likes of Bradley Dack and Callum Davies.
He made his Football League debut against Rotherham United in November 2013, and signed a four-and-a-half year contract at the club three months later.
Hessenthaler's aforementioned goal against the Sky Blues earned him the coveted Goal of the Season prize at the 2013/14 Player of the Year awards; on the same night he was voted the club's Young Player of the Year.
He scored twice during the 2016/17 campaign, during which he made 33 appearances for the club.