[3] El Alagui began his career in amateur leagues in his native France, plying his trade at FC Marmande 47 and Bergerac Foot.

[11] In April 2012, he furthered his reputation with the Falkirk fans, after winning the Scottish Challenge Cup he jumped into the crowd to celebrate with the support.

In early-October, El Alagui suffered a serious knee injury, after colliding with Paul Jones in a match against Crawley Town and spent much of the rest of the season on the sidelines.

[19] He made his return from injury in the penultimate game of the season against Hartlepool United, replacing goalscorer Marcello Trotta after 75 minutes of a 1–1 draw.

[21] On 6 August 2013, El Alagui began his 2013–14 season by coming on as a substitute for Emmanuel Oyeleke in the 54th minute of a League Cup first round match against Dagenham & Redbridge and scored two goals to help Brentford to a 3–2 extra time win.

[24] In November and having started in only three of his first 12 appearances of the 2013–14 season, El Alagui expressed his frustration at being unable to force his way into Uwe Rösler's plans.

[25] El Alagui notched his sixth goal of the season in a 3–2 FA Cup second round defeat to Carlisle United on 7 December.

[28][29] What would be El Alagui's final appearance for the Bees came in a 3–1 victory over Milton Keynes Dons on 29 December, replacing Marcello Trotta after 81 minutes.

[31] He made 30 appearances and scored 9 goals during his two seasons with the club,[32] his time with the Bees largely disrupted by his knee injury suffered in October 2012.

[39] On 30 August 2014, El Alagui had to go off injured in the first half as Hibernian lost 2–1 against Alloa Athletic, with the club fearing he had a ruptured an achilles' tendon.

[42] Complications from the earlier surgery meant that El Alagui did not play for Hibs during the early part of the 2015–16 season,[43] and at the end of his contract he was released by the club.

[52] After turning down a new contract with the club, El Alagui departed Dunfermline on 23 January 2017, with the intention of moving to play in Asia.

El Alagui subsequently signed for fellow Scottish Championship club Ayr United on 7 February 2017, on a contract until the end of the 2016–17 season.