[5] After spending a year in the reserves, playing in only 3 matches, he joined English side Middlesbrough agreeing to a three-year deal.
[6][7] Despite the hype surrounding the signing by Middlesbrough and their supporters, including comparing the youngster to the likes of Patrick Vieira,[8] Goulon only featured in the reserves.
After going through the duration of his contract, the English club released him, without the player ever playing a match in the Premier League.
[9][10] Goulon signed with Le Mans on the last day of the winter transfer window,[11] and made his league debut on 7 March 2009, in a match against Nancy coming on as a substitute in the 83rd minute.
Despite interests from Süper Lig side Beşiktaş[12] Goulon remained at the club and provided an assist for Thorstein Helstad, in a 2–1 win over Nancy on 22 August 2009.
[22] In late September 2010, it was revealed that Goulon, now a free agent, had begun a two-week trial with Premier League club Blackburn Rovers.
[24] Goulon made his Blackburn Rovers debut, where he came on as a substitute for Morten Gamst Pedersen in the 72nd minute, in a 2–0 win over Aston Villa on 21 November 2010.
On 4 July 2013, Goulon signed a two–year contract with Ekstraklasa side Zawisza Bydgoszcz after a year out of football.
[37] Weeks later on 2 August 2013, Goulon scored his first Zawisza Bydgoszcz goal, in a 1–1 draw against Pogoń Szczecin.
[43] In his first season at Zawisza Bydgoszcz, Goulon made sixteen appearances and scored two times for the club.
The second season at Zawisza Bydgoszcz saw Goulon rehabilitating his back and returned to training in early October.
[49][50] Goulon made his AC Omonia debut on 14 February 2015, where he played eight minutes, in a 2–1 loss against Apollon Limassol.
[60] Goulon made his Viitorul Constanta debut on 12 March 2016, playing in the centre-back, in a 1–1 draw against Pandurii Târgu Jiu.