Allan Marques Loureiro (born 8 January 1991), commonly known as Allan Marques, or simply Allan (), is a Brazilian footballer who plays as a defensive midfielder for Emirati club Al Wahda and the Brazil national team. After starting out in the Madureira youth system in his home country, he joined Uruguayan club Deportivo Maldonado, but later returned to Brazil and made his professional debut with Vasco da Gama in 2009. Allan joined Italian club Udinese in 2012, and subsequently moved to fellow Serie A side Napoli in 2015. At international level, he was a part of the Brazil under-20 side that won the 2011 FIFA U-20 World Cup, and later made his senior debut for Brazil in 2018; he was a member of the team that won the 2019 Copa América on home soil. Club career Madureira and Deportivo Maldonado Allan was signed from Madureira by Uruguayan side Deportivo Maldonado at 17 years of age for an undisclosed fee. However, he was later loaned out to Vasco da Gama back in Brazil; he would not make an appearance for Maldonado. Vasco da Gama Allan moved to Vasco da Gama once again still as a youth player, loaned from Deportivo Maldonado. A year after he played for their youth team, he was brought back and promoted to the first-team by coach Dorival Júnior, playing in many crucial games in the club's 2009 season to help the side win the Série B and secure promotion to the top-flight Série A, though he ultimately suffered an injury. Due to injury, Allan could not compete with Vasco da Gama neither in the Campeonato Carioca nor the 2010 Copa do Brasil. After an initial recovery, he returned to the club's junior team to regain fitness before rejoining the first-team. He then returned to action in the last round of the Série A before the break for the 2011 FIFA U-20 World Cup, playing in the Copa da Hora friendly tournament. The club won the tournament, with Allan contributing to the title, also scoring a goal in a 3–2 victory over Coritiba. Udinese In June 2012, Allan signed for Serie A side Udinese for a reported fee of R$7 million from Deportivo Maldonado. He made his debut for Udinese at home at the Stadio Friuli against Juventus, where he created an assist for teammate Andrea Lazzari's goal. In his first season in Udine, Allan played mostly