Genk Born in
Mechelen, Defour played youth football with local
K.V. Mechelen, moving to
K.R.C. Genk in 2004. He made his
Pro League debut on 30 October 2004 as a 78th-minute
substitute for
Paul Kpaka in a 1–0 home win against
Sint-Truidense V.V. in a
Limburg derby, and scored his first goal on 5 November the following year, also
assisting in the 4–1 victory over
K.S.V. Roeselare at the
Fenixstadion. At just 17, he became first choice, finishing the
2005–06 campaign with 26 games and one goal to help his team to the fifth position. When Genk failed to qualify for
European competition, Defour tried to move to
AFC Ajax in the summer of 2006. Enraged by earlier reports that Ajax had approached the player to broker a deal without their consent, Genk did not accept the proposed transfer fee, and after protracted negotiations, Ajax pulled out of the deal. Defour tried to force a transfer by threatening to leave, using a Belgian law that allowed professional athletes on fixed-term contracts to leave their employers before the end of the stipulated term, but Ajax did not express a renewed interest in his services, and he ended up signing for
Standard Liège for a much-reduced transfer fee, effectively breaking a
gentlemen's agreement between Belgian sides not to sign under-contract players using the aforementioned law.
Standard Liège Defour joined Standard on a five-year deal, being appointed
team captain at the start of his
second year after taking over from Portugal's
Sérgio Conceição – he was just 19 years old. He received the
Belgian Golden Shoe at the end of the season in the process, leading the
Reds to their first league title in 25 years. In late 2009, shortly after scoring four goals in 31 games to help Standard
renew their domestic supremacy, Defour broke his right foot. During his period of recovery he received a letter from
Alex Ferguson, manager of
Manchester United, wishing him all the best in his recovery, and this led to persistent rumours of a switch to the English club, but he refuted these by saying "I do know that Manchester United are monitoring me – if everything goes well and I continue playing as I am, there is a better chance of me leaving than there was at the start of the season"; eventually, nothing came of it.
Porto On 15 August 2011, Portuguese club
FC Porto agreed to buy the sporting rights of Defour for
€6 million, and he signed a five-year contract. He finished his
first year with 37 official appearances and added two goals, helping his new team to win the
Primeira Liga championship. Defour netted Porto's second goal against
GNK Dinamo Zagreb on 18 September 2012 in
the group stage of the
UEFA Champions League (2–0 away win). The following 13 March, for the same competition but in the
round of 16, he was
booked twice and subsequently
sent off in the 49th minute of the second leg of the tie at
Málaga CF, as the
northerners lost 2–0 at
La Rosaleda Stadium and 2–1 on aggregate.
Anderlecht On 13 August 2014, Defour moved to
R.S.C. Anderlecht on a five-year deal, for €6 million. On 25 January of the following year, when playing at Standard Liège, he was sent off for deliberately kicking the ball at home fans who had unfurled a banner depicting his severed head under the slogan "Red or Dead". His ejection caused the visiting supporters to rip out their seats and throw them onto the pitch, and the banner received criticism from both the
Royal Belgian Football Association and the league.
Burnley On 16 August 2016, Defour signed for
Premier League club
Burnley on a three-year deal for a club-record transfer fee of £8 million. He made his competitive debut four days later, starting in a 2–0 home win over
Liverpool in which he helped create the second goal by
Andre Gray but was substituted early in the second half due to a lack of fitness. On 10 September, also at
Turf Moor, he scored his first goal for his new team to open a 1–1 draw with fellow promotee
Hull City, and was praised after the match by manager
Sean Dyche. Defour scored a 25-yard
direct free kick on 26 December 2017, as Burnley led 2–0 at
half-time in an eventual draw at Manchester United. During his later spell, he was constantly bothered by injury problems. His contract was extended in September 2018 to last until June 2020, but on 31 August 2019, he had it terminated citing personal reasons and a need to return to Belgium. In September 2022, Dyche named Defour as the most talented player he ever coached in his ten years at Burnley.
Later career In September 2019, aged 31, Defour joined
Antwerp on a one-year deal. On 16 October 2020, he returned to
Mechelen 13 years after leaving the
Achter de Kazerne, agreeing to a performance-oriented contract. Defour announced his retirement on 11 May 2021. ==International career==