Question: in the 2003-04 Wolfsburg signed a starlet from River Plate who plays in what position ?

Context paragraphs:
Eladio Rojas: Eladio Alberto Rojas Díaz (8 November 1934, Tierra Amarilla, Chile – 13 January 1991, Viña del Mar, Chile) is a former Chilean footballer who played as a midfielder for Everton and Colo-Colo of Chile, River Plate of Argentina, and the Chile national football team in the 1962 FIFA World Cup on home soil.  Rojas scored the match winning goal for Chile in the 90th minute against Yugoslavia in the 1962 World Cup; his goal secured a third place finish for the World Cup hosts, which is Chile's best finish in the tournament to date.  Rojas was also a starter on the River Plate teams of the 1960s that fiercely contested the Argentine Primera División title.  While Rojas never won the title, River Plate did manage to place second in 1962 and 1963 as well as third in 1964.

Diego Bogado: Bogado began his career 1996 on youthside for Club Atlético River Plate and was 2006 promoted to the seniorside, who served as a sparring partner in the senior squad under the command of coach Marcelo Bielsa in the Copa América in Peru.  He made his professional debut in Argentina's first division playing for River Plate, where he played through 2010.  After sixteen years left in March 2011 his club Club Atlético River Plate and joined to Bogor Raya F.C..  With 12 games played, he is one of the most valuable players of Indonesia football.

Andrés Flores: Nicknamed "Ruso", Flores was signed by top Argentine side River Plate and played for River Plate's Reserves team in 2006–2008.  He impressed in Argentina, but was unable to stay due to his age.

Andrés D'Alessandro: Andrés Nicolás D'Alessandro (born 15 April 1981) is an Argentine footballer who plays for Internacional as an attacking midfielder.

Club Atlético River Plate: Club Atlético River Plate is an Argentine sports club based in the Belgrano neighborhood of Buenos Aires, and named after the city's estuary, Río de la Plata.  Although many sports are practiced at the club, River is best known for its professional football team, which has won the most domestic competitions in Argentina with 36 league titles in the top division, 2 second division championships and 9 national cups.  At international level, River Plate has won a total of 16 official titles.

2003–04 VfL Wolfsburg season: VfL Wolfsburg started the season in brilliant fashion, taking an early Bundesliga lead, before slipping back in a nightmare run, which saw the team finish in the midfield, with a lower points haul than the previous seasons.  Wolfsburg also dropped a bombshell when they signed Argentine starlet Andrés D'Alessandro of River Plate.  D'Alessandro had been relatively disappointing season, but Fernando Baiano together with Diego Klimowicz made sure the attack functioned really well.

1991 Supercopa Libertadores Finals: The 1991 Supercopa Sudamericana Finals were the finals of the fourth edition of the Supercopa Sudamericana football tournament.  It was contested by Argentina club River Plate and Brazil club Cruzeiro .  The first leg of the tie was played on November 13 at River Plate's home field, with the second leg played on November 20 at Cruzeiro's.

Juan Carlos Muñoz: Juan Carlos Muñoz (4 March 1919 – 22 November 2009) was a footballer from Argentina who played as a right winger for River Plate, from 1939 to 1950, playing 184 games and scoring 39 goals.  He started playing professionally for Sportivo Dock Sud in 1938.  and he was sold in June 1939 to River Plate.  He was part of the team known as La Máquina ("the machine") which dominated Argentine football in the 1940s, and was also a member of the Argentine national team that won three South American Championships during the same decade.  During his time at River Plate he won 4 titles and is considered one of their greatest ever players.  After a very successful time at River Plate He moved to Platense, from 1951 to 1953, where he played in 39 games making 3 goals.

SV River Plate Aruba: River Plate Aruba, known also as River Plate, or simply River, (previously named ASV River Plate)

1996 Intercontinental Cup: The 1996 Intercontinental Cup was a football match played on November 26, 1996, between Juventus, winners of the 1995–96 UEFA Champions League, and River Plate, winners of the 1996 Copa Libertadores.  The match was played at the National Stadium in Tokyo.  It was Juventus' third appearance into the competition, after the defeat in 1973 and the victory in 1985 against Argentinos Juniors, whereas it was River Plate's second appearance after the victory in 1986 against Steaua Bucharest.  Alessandro Del Piero was named as man of the match and got the only goal of the game when he shot right footed to the top of the net in the 81st minute.

Supporting paragraphs: 2003–04 VfL Wolfsburg season Andrés D'Alessandro
Answer: attacking midfielder