Career
A veteran defender who played for and, Hargan retired at the end of 2009 with One of the veterans of the 1996-1997 league-winning side, Hargan continued to play an integral part for the Candystripes and had his testimonial year in 2005, before moving to at the end of 2008. As a youngster Sean played for Top of the Hill Celtic F.C. in the Derry and District League.As he got older he broke into the team in the position of striker and scored a hat trick on his debut. Hargan later converted to left back, where he offers total commitment to the side.
This has endeared him to the fans.
Also during the 2006 league season, escaped punishment for fielding a banned Hargan due to the league failing informing in the correct timeframe. By the end of that season, Hargan had made a total of 393 appearances for the club - that makes him the club"s third highest appearer ever.
Hargan was described as a great servant for the club and is mostly remembered for the goal he scored in the Europa League against IFK Gothenburg which saw Derry to a 1-0 victory on the night. After Derry"s City"s European experience, Shelbourne were reported to have showen interest in the left back, but Hargan pledged his loyalty and stayed with the Candystripes until the end of the 2008 season.
With the signing of Dave Rogers at the beginning of the 2007 season, Hargan"s first-team place came under stiff competition.
Nevertheless, due to his senior status in the team he was handed the role of vice-captain to Peter Hutton by Pat Fenlon for the season and Hargan seen off the completion of Rodgers until he sustained an injury that would keep him out for the rest of the season. Hargan signed for a at the end of that season after departing the Brandywell club after 14 years at the club Hargan was appointed the First Team Coach at following the appointment of Peter Hutton as manager in 2014.
At the end of December 2008, Irish League side signed Hargan on an 18-month deal.
Dungannon Swifts and Coleraine were also believed to be interested in the veteran full-back, but Hargan signed for the Crues and spent just under a year as his career was cut short due to injury. Hargan retired from professional football at the end of the 2009 season at the age of 37.