Midfielder Fulton joined the Swans from Falkirk in January 2014 on a two-and-a-half-year deal and linked up with the club's under-21 squad.
Fulton had shown his potential in the Scottish Championship, having made over 100 senior appearances and helped Falkirk to two semi-finals in domestic cup competitions.
The Scot made his first Premier League appearance as a substitute in the 4-1 win over Aston Villa back in April 2014 before making his maiden start in the final game of the season away at Sunderland.
He played five games during the 2014-15 campaign, including the laudable 1-0 victory at Southampton.
Fulton then spent time on loan with Oldham at the start of the 2015-16 season before featuring twice for the Swans in victories over Arsenal and Liverpool before the end of the campaign.
After signing a new four-year deal in July 2016 which ties him to the Swans until the summer of 2020, Fulton clocked up 16 appearances in 2016-17.
He made three appearances for the Swans at the start of the 2017-18 campaign before joining Wigan on a six-month loan in which he would feature six times - scoring once - as the Latics won League One.
He penned a new contract in November 2018 which sees him tied to the Swans until 2021.