Question: Stefano Nava was a backup for which former right-back who now is the assistant coach for the Ukrainian national team?

full_context: Document 1: Daniele De Rossi: Daniele De Rossi, (] ; born 24 July 1983) is an Italian professional footballer who plays as a defensive midfielder for Roma and the Italy national team. De Rossi inherited the captaincy of Roma at the start of the 2017–18 season following the retirement of Francesco Totti.
Document 2: Paolo Maldini: Paolo Cesare Maldini (] ; born 26 June 1968) is an Italian former professional footballer who played as a left back and central defender for A.C. Milan and the Italy national team. He spent all 25 seasons of his career in the Serie A with Milan, before retiring at the age of 41 in 2009. He won 23 trophies with Milan while in the squad: the UEFA Champions League five times, seven Serie A titles, one Coppa Italia, three Supercoppa Italiana titles, four European Super Cups, two Intercontinental Cups and one FIFA Club World Cup.
Document 3: Italo Galbiati: Italo Galbiati (born 8 August 1937 in Italy) is an Italian football coach and former player. He is a trusted assistant to Fabio Capello having worked with Capello at AC Milan, Roma, Juventus, Real Madrid and England national team. He has also managed AC Milan himself on a caretaker basis, and is currently an assistant manager to Capello with the Russia national team.
Document 4: Demetrio Albertini: Demetrio Albertini (born 23 August 1971 in Besana in Brianza) is the sporting director of Parma and a former professional Italian football midfielder and vice-president of the Italian Football Federation (FIGC). He is widely considered as one of the legends of the A.C. Milan side of the 90s and a fundamental player for the Italian national team of the same period. He spent most of his career with Milan of the Italian Serie A, winning many trophies, including five Serie A titles and two UEFA Champions League titles with the club. He also played his final season for FC Barcelona, winning the Spanish League before retiring that year.
Document 5: Stefano Vavoli: Stefano Vavoli (born 30 December 1960 in Terracina, Italy) is an Italian retired footballer. He played as a goalkeeper. He played for Genoa youth teams and he made his debut in Serie B during 1979-1980 season. He continued his career in lower series with Pergocrema, Civitavecchia, Entella, Sant'Elena Quartu and Sorso until 1986. During that year he was bought by Verona with whom he played one season in Serie A as the reserve of Giuliano Giuliani. He made his Serie A debut on 12 October 1986 against Udinese and played also another match against Avellino the subsequent week. He then returned to play in Serie C with Massese and some other teams.
Document 6: Gennaro Gattuso: Gennaro Ivan "Rino" Gattuso, (] ; born 9 January 1978) is an Italian football manager in charge of A.C. Milan Primavera and a former footballer.
Document 7: Carlo Ancelotti: Carlo Ancelotti (] ; born 10 June 1959) is an Italian former footballer and current football manager. He last was manager of German club Bayern Munich. Ancelotti is the only manager to have won the UEFA Champions League three times and reached four finals (three finals and two victories with Milan, and one victory with Real Madrid). He also won the FIFA Club World Cup twice, managing Milan and Real Madrid. Ancelotti is regarded as one of the best and most successful managers of all time.
Document 8: Stefano Nava: Stefano Nava (born 19 February 1969 in Milan) is an Italian former footballer, who played as a defender. He is best known for having played for A.C. Milan in the early 1990s, where he was a backup for players such as Franco Baresi, Paolo Maldini, Mauro Tassotti and Alessandro Costacurta.
Document 9: Daniele Massaro: Daniele Emilio Massaro (born 23 May 1961) is an Italian former footballer, who played as a forward. He is mainly remembered for his highly successful career with A.C. Milan during the late 1980s and 1990s, under managers Arrigo Sacchi and Fabio Capello, with whom he went on to achieve notable domestic, European, and international success. Massaro was also a member of the Italian national team that won the 1982 FIFA World Cup, although he did not make an appearance in the tournament, and he was a member of the team that reached the final of the 1994 FIFA World Cup, scoring a goal during the tournament; in the final, he missed one of Italy's penalties in the resulting shoot-out, as Brazil went on to lift the trophy.
Document 10: Mauro Tassotti: Mauro Tassotti (] ; born in Rome, 19 January 1960) is an Italian manager and former footballer who played predominantly as a right-back. He currently serves as an assistant coach for the Ukraine national football team. After making his Serie A debut with Lazio, he went on to play with A.C. Milan for 17 years. He won 17 major titles with the club, namely five Serie A championships and three UEFA Champions League tournaments, reaching five finals in total. He is mostly remembered for his role alongside Paolo Maldini, Franco Baresi, Alessandro Costacurta, Filippo Galli, and Christian Panucci in the Milan backline under Arrigo Sacchi and Fabio Capello, forming what is considered by many in the sport to be one of the greatest defensive lineups of all time.
Document 11: Massimo Ambrosini: Massimo Ambrosini (born 29 May 1977 in Pesaro, Marche) is a former Italian professional footballer, who mainly played as a defensive midfielder. At club level, he is mostly known for his successful time at Italian team A.C. Milan, where he spent eighteen years of his career, winning several titles, and even captained the side from 2009 to 2013, following the retirement of Paolo Maldini. Ambrosini retired from professional football in 2014, after a season with Fiorentina. At international level, he represented Italy at the 2000 Summer Olympics, and in two UEFA European Championships, winning a runners-up medal at UEFA Euro 2000.
Document 12: Stefano Vecchi: Stefano Vecchi (born 20 July 1971) is a retired Italian professional footballer turned coach, currently in charge as youth coach of the reserves of Serie A club Inter Milan.
Document 13: Fabio Cannavaro: Fabio Cannavaro, (] ; born 13 September 1973) is an Italian former professional footballer and current manager of Chinese club Tianjin Quanjian.
Document 14: 1997–98 A.S. Roma season: Associazione Sportiva Roma was reinvigorated under new coach Zdeněk Zeman, who recently had been coaching arch rivals Lazio. Zeman brought his attacking 4–3–3 with him, resulting in Roma scoring 67 goals, but also conceding 42, an extreme rarity in defensive-minded Italian football. Roma finished fourth, three places above Lazio in the table. That was the first time it had happened in five years, which delighted the Roma board, and Zeman stayed on for a further season. The season also saw the international breakthrough of former youth-team product Francesco Totti, who at 21 was ready for increased responsibility and captaincy, responding with 13 league goals from a position on the left-wing of the attack. Also noticeable was new signing Cafu's offensive skills as a right-wing back, granting him a reputation among the world's top wing backs.
Document 15: Franco Baresi: Franco Baresi (] ; born 8 May 1960) is an Italian football youth team coach and a former player and manager. He mainly played as a sweeper or as a central defender, and spent his entire 20-year career with Serie A club A.C. Milan, captaining the club for 15 seasons. He is considered one of the greatest defenders of all time, and was ranked 19th in World Soccer's list of the 100 greatest players of the twentieth century. He won the Champions League 3 times, as well as 6 Serie A titles, 4 Supercoppa Italiana titles, 2 European Super Cups and 2 Intercontinental Cups.
ground_truth: Mauro Tassotti