Gillesphey played for Cramlington Juniors before being signed by Newcastle United where he progressed through the youth academy and signed a professional contract in March 2015.[3] Gillesphey made his professional debut on 24 September 2015 in a 1–1 draw away at Liverpool in the League Cup.[4]
Carlisle United (loan)
Gillesphey went out on loan to Carlisle United in September 2015 along with Newcastle teammate Alex Gilliead.[5] On 29 July 2016, Gillesphey re-joined Carlisle United on loan until 2 January 2017,[6] before later extending the deal to the end of the season.[7]
Carlisle United
Gillesphey re-joined Carlisle United on a permanent basis in June 2018, signing a two-year contract with the club .[8] On 22 May 2019, the club announced a mutual release so that Gillesphey could look for 'new challenges'.
Brisbane Roar
On 25 June 2019, the Brisbane Roar announced they had signed Gillesphey.[9] He was the fourth signing made by new manager Robbie Fowler.
On 16 September 2020, Gillesphey was named the Gary Wilkins Medalist for the 2019–20 season.[10]
On 15 June 2021, it was confirmed that Gillesphey had turned down the offer of a new contract at The Roar and would be returning to the UK to sign for a club in England.[11]
Plymouth Argyle
On 15 June 2021, Plymouth Argyle announced they had signed Gillesphey on a two-year deal after turning down a new contract with Brisbane Roar.[12][13] He was given additional time off before pre-season due to the late finish of the A-League season.[14]
Gillesphey scored his first goal for Argyle on 5 February 2022 against Chelsea in the fourth round of the FA Cup at Stamford Bridge. The goal gave Argyle an early lead against the reigning European champions in a match they eventually went on lose 2–1 after extra time.[15]
Charlton Athletic
On 12 January 2024, Gillesphey joined Charlton Athletic on a two-and-a-half-year deal, with the option of an extra year, for an undisclosed fee.[16]
Career statistics
As of match played 19 October 2024
Appearances and goals by club, season and competition