Routledge became the club's fifth new signing after joining from Newcastle United for an undisclosed fee in August 2011.
Made his first Swans appearance the same day he signed a three-year contract, as he came off the bench in a friendly victory over Real Betis.
Joined the day after Leroy Lita sealed his move, and gave further options out wide.
The winger has plenty of Premier League experience. He came to prominence by starring for Crystal Palace, where he made over 100 league appearances.
That earned a move to White Hart Lane as Tottenham Hotspur paid £1.25million for his services.
After breaking his foot on his Spurs debut, he found it difficult to break back into the side and then spent time on loan at Portsmouth and Fulham.
Aston Villa then snapped him up as Tottenham sold him for the same fee, but was back out on loan - this time at Cardiff City, where he actually featured against the Swans in a South Wales derby.
An impressive spell at the Bluebirds earned him a £600,000 move to QPR before his form prompted Newcastle to take him to St James' Park.
But he was soon back at Loftus Road on loan, scoring five goals in 20 league appearances as QPR won the Championship title.
A switch to the Swans saw him make 28 Premier League appearances – 17 starts – along with a first goal in the top-flight after striking in the 2-0 win at former club Aston Villa.
However, the 2012/13 was arguably one of the best of Routledge's career as he was a regular starter under Michael Laudrup, making 44 appearances and scoring five goals.
But he went one better in 2013-14, playing 47 games - the most in the Swansea squad - scoring six goals in the process.
Routledge has played for England Under-16s, U19s and U21s. In 2007, he helped the U21s to the semi-final of the European Championships before a penalty shoot-out defeat to Holland.