Serey Dié  Sereso Geoffroy Gonzaroua Dié (born 7 November 1984), known as Serey Dié, is an Ivorian professional footballer who plays as a defensive midfielder in Switzerland for Aarau. Born in Facobly, Dié started his football career with Centre National des Sports de Haut Niveau in Abidjan. He played one year for Volcan Junior and one year for CO Korhogo, before moving to top team Stade d'Abidjan in 2003. Three years later, he moved to EO Goulette et Kram in Tunisia. But this was also to remain a short stay, he cancelled his contract himself after just half a year. Dié was invited for a trial with ES Sétif, and therefore moved to Algeria. This adventure nearly started and ended as a farce on the same day. As the club's president saw Dié, he thought that the wrong player had been hired and sent him home. The coach asked Dié to stay for the training, which he did and in a test match, he was able to convince the club's management to let him stay for a six-month trial. During this trial period, Dié played well and ES Sétif won the 2007–08 Arab Champions League, but he refused to sign the contact that he was subsequently offered. Between 2008 and 2012, Dié played for Sion, with whom he won the Swiss Cup twice. During March 2010, he came under suspicion of corruption in connection with betting manipulation. In May 2012, he was the subject of controversy after cameras filmed him slapping a thirteen-year-old ball-boy in the face. This was during the away game against FC Lausanne-Sport on 2 May. This assault resulted in an eight match suspension. On 13 December 2012, Basel announced the signing of Dié on a three-and-a-half year contract. He made his debut for Basel on 10 February 2013, in a 3–0 home win in St. Jakob-Park against his former club, Sion. He scored his first goal for Basel, the first goal of the match, in a 4–0 away win against Luzern in the Swissporarena, on 1 April 2013. At the end of the Swiss Super League season 2012–13, he won the Championship title and was Swiss Cup runner up with Basel. In the 2012–13 UEFA Europa League, Basel advanced as far as the semi-finals, there being matched against the reigning UEFA Champions League holders Chelsea, but were knocked out being beaten 2–5 on aggregate.