Ki became a then club record signing in August 2012 after joining from Celtic for £5.5million.
The 23-year-old signed a three-year contract and became the most expensive footballer in South Korean history.
Ki scored the final penalty in the Olympic quarter-final shootout against Team GB, and made his first Swans appearance in the Capital One Cup win over Barnsley at the Liberty before getting his first taste of Premier League football a few days later against Sunderland.
Yet to find the net in Swansea colours, Ki made 38 appearances in his debut season in English football.
Ki started his career at FC Seoul after spending four years in Australia, and was named the Asian Young Footballer of the Year in 2009.
He caught the attention of a number of top clubs in Europe, and eventually joined Celtic in January 2010.
While at the Hoops, Ki was named man-of-the-match after scoring in the 2011 Scottish Cup final win over Motherwell before helping them to the league title earlier this year.
Named the Korean FA’s footballer of the year in 2011, he starred in his nation’s third-place finish in the London Olympics, where he played against new team-mate Neil Taylor.