Allan

Allan would then receive a start in Napoli's third game of the season, a 2–2 away draw with Empoli, scoring an equalizer in the 78th minute after converting a pass from captain Marek Hamšík.

The match finished 5–0 for Napoli, the club's largest European win and the joint-largest margin of defeat for Brugge, equalling its 6–1 defeat at Monaco in 1988.

Allan would go on to score once again and provide another assist in a 5–0 win against Lazio, only three days after the Brugge victory on 20 September, giving manager Maurizio Sarri trust in him for his precise passing and defensive work.

On 26 September, Allan scored a goal against defending champions Juventus, with excellent passing and an impressive overall game in a 2–1 home win.

On 4 October, Allan would score the opening goal in a 0–4 away rout of Milan in a swift counter-attacking move, where the Brazilian went one-on-one with Milan goalkeeper Diego López.

Allan Marques Loureiro (born 8 January 1991), commonly known as Allan Marques or simply Allan, is a Brazilian footballer who plays as a midfielder for Emirati club Al Wahda.

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.

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.

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.

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.

Allan moved to Vasco da Gama once again still as a youth player, loaned from Deportivo Maldonado.

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.

Allan joined Italian club Udinese in 2012, and subsequently moved to fellow Serie A side Napoli in 2015.

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 as a defensive midfielder, recovering and distributing a large number of balls.

Manager Francesco Guidolin played him in 36 games in the league out of 38 games, he proved one of the best bargains of the season, defying expectation and playing almost all games as a starter to help Udinese to finish in a surprise fifth-place position, securing qualification to next year's UEFA Europa League.

The following season the club finished 13th in the league in what was Francesco Guidolin's final season with the side.

Despite this, Allan excelled in midfield, and scored his first goals for the club as his improvement in Italy continued.

His calm and controlled performance in midfield also prompted future Udinese manager Andrea Stramaccioni to suggest that he was now one of the best young midfielders in Europe, comparable to Manchester United's Paul Pogba.

In the 2014–15 season, Allan was to be the top ball-winner of all of Europe's top-five leagues with the most balls won.

After reported interest from a number of other clubs, Allan signed for Napoli for €10m plus bonuses in July 2015.

In the 2015–16 season, Allan made his Napoli debut in a pre-season friendly against Lega Pro side FeralpiSalò, which Napoli won 5–2.

He made his first Serie A debut for Napoli at home against Sampdoria in the second matchday of the Serie A season, creating an assist for Gonzalo Higuaín with a through-ball that the latter converted with a right-footed shot from the right side of the box, making the scoreline 2–0.

Allan was later substituted in the second half for David López.

On 17 September 2015, Allan came off the bench in the 62nd minute against Belgian club Club Brugge in his first ever Europa League game, assisting José Callejón's second goal of the game with a through-ball just minutes after coming on.

In the 2016–17 season, Allan had 29 Serie A appearances (1 goal, 5 assists), 8 Champions League appearances culminating in an 86.6% pass completion rate, an average of 2.4 successful tackles per game and he also averaged one key pass (one that led to a goalscoring opportunity) per game.

Allan suffered an injury to his hamstring on 16 December during an away game against Leicester City, he was replaced in the 41st minute by Andre Gomes; Everton won the game 0–2.

In the 2017–18 season, Allan played in all 38 Serie A matches, scoring four goals.

During that season, Allan extended his contract with Napoli until 2023.

In the following season, he featured in 33 Serie A matches and reached the 2018–19 UEFA Europa League quarter-finals with Napoli.

In the 2019–20 season, he played in the 2019–20 UEFA Champions League round of 16 home match against Barcelona, which ended 1–1, then he won the 2019–20 Coppa Italia against Juventus, his only silverware with Napoli.

On 5 September 2020, English club Everton signed Allan for around £21.7m on a three-year deal, to be reunited with former Napoli manager Carlo Ancelotti.

He made his debut the following week in a 1–0 win away to Tottenham Hotspur.

Allan was ruled out for the remainder of Everton's games in 2020.

He returned to the starting eleven on 1 March against Southampton playing the full 90 minutes, Everton won the game 1–0.