Gaël Kakuta plays for Chinese Super League club Hebei China Fortune as a left winger. A youth product of Lens moved to Chelsea in 2007 and became a player for the youth team. He impressed at Chelsea after his first reserve game alongside teammate Michael Ballack. The German international told journalists, "Go see the French lad, he is the star". Kakuta soon began to flourish earning the Academy Scholar of the Year award after his first season with Chelsea. He was also voted Academy Player of the Year after finishing as the top scorer in the youth side finishing his first Chelsea season with 12 goals in 24 appearances. This included a hat trick against Port Vale in the FA Youth Cup. On 1 September 2009, Chelsea manager Carlo Ancelotti added Kakuta to his Champions League squad. Kakuta made his much anticipated Premier League debut during a home match against Wolverhampton Wanderers on 21 November 2009 as a substitute replacing Nicolas Anelka on the hour, impressing largely with his tricks, skills, pace and enthusiasm. On 8 December 2009, he made his Champions League debut against APOEL. He became the youngest Chelsea player to ever represent the club in the Champions League. He played 73 minutes before being substituted for Fabio Borini. The match ended in a 2–2 draw. Carlo Ancelotti was not satisfied with the team's performance but was very positive about the French youth international: "We had no intensity and no concentration, it was a very bad game from us. The only positive of the night was Gaël Kakuta. He played very well, he showed his fantastic talent. He trains very well everyday and will be the future of Chelsea. On 21 December 2010, Kakuta signed a new four-and-a-half-year contract with Chelsea, committing himself to the club until 2015. Kakuta expressed his desire to leave because he says he is unwilling to sit on the bench for another year. On 25 January 2011, Kakuta had a medical at Fulham with a view to joining them on loan until the end of the season. Kakuta passed his medical 26 January 2011 and joined Fulham for the rest of the 2010–11 season. On 31 January 2014, Kakuta joined Italian side Lazio on loan for the remainder of the 2013–14 Serie A season. On 25 July 2014, Kakuta agreed to join La Liga side Rayo Vallecano on loan for the 2014–15 season. He made his debut in the competition on 25 August, starting and playing the full 90 minutes in a 0–0 home draw against Atlético Madrid. On 14 September, Kakuta scored his first goal for the Madrid side, but in a 2–3 home loss against Elche CF. On 19 June 2015, following his release by Chelsea, Kakuta signed a four-year deal with Sevilla FC. It is understood that Sevilla paid compensation to Chelsea as he was under 24. On 6 February 2016, Kakuta transferred to Chinese Super League side Hebei China Fortune. He was a French youth international and represented them at under-17, under-18, under-19, under-20 and under-21 levels.