The young winger was originally a New Year loan signing from Southampton in 2009.
The Saints' Academy graduate, who has also had spells at Burnley and Sheffield United, signed on loan until the end of the 2008-09 season.
A player who can play on either flank, he turned in some impressive displays on loan, especially in the FA Cup ties against Fulham and Portsmouth.
It prompted the Swans to splash out £400,000 - a club record equalling transfer fee at the time - to sign him on a permanent basis from Southampton in the summer of 2009.
He enjoyed an impressive first full season in the Championship, despite being asked to play a more defensive role, and scored twice from 40 league appearances.
But it was the arrival of Brendan Rodgers that really brought the best out of him.
Ever-present throughout the promotion-winning campaign, his scintillating form down the wing was such that he was voted the Supporters Player of the Year - no mean feat considering he was up against 27-goal winger Scott Sinclair.
Dyer enjoyed his finest season in front of goal in 2011/12 – scoring five Premier League goals and another in the FA Cup – as his stock continued to rise.
Opened the scoring in the 2-0 win at Aston Villa – the club’s first away victory in the Premier League – while he was also on target in the 3-2 home triumph over Arsenal.
Dyer followed up his success in his debut campaign in the top flight with another successful year in 2012/13, making 44 appearances and scoring six goals - including a brace in the Capital One Cup final against Bradford at Wembley.
The winger made a further 37 appearances in 2013-14, scoring six times.
During the post season, he signed a new four-year deal at the club, tying him down to the Swans until June 2017.
Dyer again impressed the Jack Army in the 2014/15 campaign, as the winger got off to a flying start by scoring three goals in the opening four games during the club's record-breaking season.
The following year he made two appearances - scoring once - before joining Leicester City on loan. He featured 12 times for the Foxes and capped an unbelievable season at the King Power Stadium by picking up a Premier League winners medal.