Career
A product of Thistle"s youth system, Scully briefly featured in the first team, before spending time on loan at Petershill, Albion Rovers and most recently Dunfermline Athletic. Partick Thistle
Scully joined Partick Thistle in 2008 and began playing for their under-17 squad. Before arriving at Firhill he had received no formal coaching.
Having been with Partick for a year and a half Scully went on loan to West of Scotland Super League side Petershill for four weeks in 2009 to gain more first team experience.
Partick defeated Livingston 3–2 in the final with Scully making numerous saves. In conclusion to the 2009-2010 season, Scully, along with Ross McGeough and Ryan MacBeth, was promoted to the first team squad.
Scully signed a new contract in September 2010 which will keep him with Partick until May 2013. During the 2010-2011 season he appeared on the bench on several occasions before suffering a setback by dislocating a thumb ruling him out for number of weeks.
After his recovery he made his senior début in the final game of the season on 7 May 2011 in a 3–0 victory against Raith Rovers in a Scottish First Division fixture where he kept a clean sheet.
Scully featured in pre-season friendly matches in advance of the 2011-2012 season, the final of which was against Dumbarton in a 4–1 defeat. He made his first appearance of the season on his nineteenth birthday keeping another clean sheet against ten-man Dundee. After Scully"s impressive display his manager Jackie McNamara admitted to having a selection dilemma with first choice keeper Scott Fox fit again following a virus.
Ultimately Scully was chosen in goal for the following match against league leaders Ross County, however the match ended in 1–0 defeat for Partick with Scully conceding his first ever competitive goal.
He lost his place in the team for the ensuing match after being ruled after incurring a concussion in training from a boot to the head Having remained on the bench for a number of games, Scully returned to the starting line-up with Scott Fox having sustained a hand injury.
Patrick defeated Queen of the South 5–0 with Scully earning his third clean sheet in four appearances. After a loan spell with Albion Rovers came to an end, Scully, along with David Wilson, signed a one-year contract extension.
After returning from a successful loan spell with Dunfermline, Scully signed a two-year contract extension with the club, which will keep him until 2016.
Scully made his premiership debut coming on as a substitute for injured goalkeeper Tomáš Černý in a 1-1 draw with Hamilton accies. Loan Spells
Scully joined Albion Rovers in the 2013 winter transfer window on a sixth month loan. At the start of 2013-2014 season, Scully was among with three players to join a club on loan to gain first experience.
Scully joined relegated side Dunfermline Athletic on a six-month loan deal.
Upon joining Dunfermline, he vowed to become the first choice goalkeeper. After establishing himself in the first team as a goalkeeper, the loan spell with Dunfermline was extended until the end of the season.
Scully expressed "delight" and had no hesitation of extending his loan spell with the club