Career
Swansea City
On 21 January 2011, Harley signed for the then Championship side Swansea City on a free transfer. He was loaned back to Exeter for the remainder of the 2010–11 season. In spite of the move, Harley would not make an appearance for the Swans.[8]
Swansea beat Reading in the Championship play-off final on 30 May 2011 to progress to the Premier League.
Brighton & Hove Albion
On 22 August 2011, Harley joined Championship side Brighton & Hove Albion on a 3-year deal for an undisclosed fee.[9]
Harley made his debut at home in a 1–0 victory against Sunderland in the League Cup.[10] He made his league debut against Peterborough United, scoring the second goal in a 2–0 win with a spectacular 30-yard free-kick.[11]
In December 2012, Harley joined League One side MK Dons on loan for the remainder of the 2012–13 season.[12] He made 11 appearances and scored 1 goal for the Dons.
Swindon Town
Harley completed a free transfer to League One side Swindon Town on 26 July 2013 after his contract at Brighton was terminated.[13] He made 25 appearances and scored 4 goals during the 2013–14 season for the Robins.
Return to Exeter City
On 20 November 2014 Harley was loaned to his former club Exeter City until January. He had previously trained with the club during the season.[14] On 12 January 2015 Exeter signed Harley to an 18-month deal after his contract was cancelled by Swindon.[15]
Milton Keynes Dons
On 9 July 2018, Harley joined previous loan club and newly relegated League Two side Milton Keynes Dons,[16] and scored on his league debut for the club on 4 August 2018 in a 1–2 away win over Oldham Athletic.[17] He enjoyed promotion back to League One with the club at the conclusion of the 2018–19 season. Following the departure of manager Paul Tisdale early in the 2019–20, Harley took up more of a coaching role with the club and his appearances for the first team were limited. At the end of the season, Harley was one of nine players released.[18]
Coaching career
In June 2022, Harley was appointed assistant head coach of National League club Notts County, assisting Luke Williams whom he had previously worked with at Milton Keynes Dons.[19] The 2022–23 season brought success for Williams and Harley as they guided County to promotion through the play-offs having finished the regulation season in second place, despite having accumulated 107 points.[20]
On 5 January 2024, Harley followed Williams to his former club Swansea City, again in the role of assistant head coach.[21]
On 29 October 2025, Harley again followed Williams to become assistant manager of EFL League One side Peterborough United.[22]
