Question: Who was the coach who left for Milan the same year that the first golden goal scorer was topscorer for Udinese Calcio?

full_context: Document 1: Oliver Bierhoff: Oliver Bierhoff (] ; born 1 May 1968) is a retired German former footballer who scored the first golden goal in the history of major international football, for Germany in the Euro 96 final, a career-defining performance that vaulted him into the international limelight.
Document 2: 1997–98 Udinese Calcio season: Udinese Calcio sensationally finished third in Serie A, much due to Oliver Bierhoff being in the form of his life, scoring 27 goals in a league season consisting of just 34 matches. Bierhoff, coach Alberto Zaccheroni and winger Thomas Helveg all left for Milan at the end of the season, ensuring Udinese had lots of work to do to stay at the level it was.
Document 3: 2002–03 Udinese Calcio season: Udinese Calcio bounced back from the hugely disappointing 2001–02 Serie A season, in which it only just managed to avoid relegation. Under new coach Luciano Spalletti, Udinese gathered strength, and was a constant feature on the top half of the league table. Even though the squad lacked the goalscoring punch, the defence led by Néstor Sensini and surprising goalkeeper Morgan De Sanctis held it together to such a degree it finished sixth in the league. Also Czech signing Marek Jankulovski impressed, the Napoli signing switching form left-wing to left back, causing interest from several bigger clubs. In the offence, Udinese's most influential player was David Pizarro, who scored seven times from the midfield and grabbed the attention from Lazio, who tried to sign him and teammate Martin Jørgensen immediately after the season had finished. Undisclosed Lazio players refused moving to Udine as compensation for the transfers, and both stayed on, much to the relief of Spalletti.
Document 4: 1992 DFB-Pokal Final: The 1991–92 DFB-Pokal competition came to a close on 23 May 1992 when 1. Bundesliga club Borussia Mönchengladbach played 2. Bundesliga team Hannover 96 at the Olympiastadion in Berlin. Hannover 96 made history as the first, and to date only, club from outside the top division to win the cup when they won 4–3 on penalties. The game had finished goalless after 120 minutes.
Document 5: 1992–93 S.S.C. Napoli season: S.S.C. Napoli got extremely close to a shock relegation to Serie B, and only held on to its top-flight status by two points. This was just three years since the club led by playmaker and legend Diego Maradona won the domestic league title. It actually spent Christmas of 1992 in the relegation zone, and climbed out of it thanks to a strong January '93 run. The reason Napoli survived was the above-average offensive skills. Gianfranco Zola, Daniel Fonseca and Careca was a trio capable of leading any teams' attack, and the club looked set to suffer when Zola (Parma) and Careca (Japan) departed at the end of the season. Fonseca's season is mostly remembered for an extremely unusual five goals in one match, as Napoli beat Valencia 5-1 away from home in the UEFA Cup. Then it lost to Paris SG in the next round, rendering it was out of Europe.
Document 6: Boris Becker: Boris Franz Becker (] ; born 22 November 1967) is a German former world No. 1 professional tennis player. He was successful from the start of his career, winning the first of his six major singles titles aged 17. He also won five year-end championships, 13 Masters Series titles, and an Olympic gold medal in doubles. "Tennis" magazine ranked him the 11th best male player of the period 1965–2005.
Document 7: List of Germany international footballers: Since the Germany national football team's first official match in 1908, it has been one of the most successful national teams in world football. They are the current World Champions, having won the 2014 World Cup, their fourth title in seventeen tournaments, to add to three titles from ten European Championships. In doing so, twenty of its players have won both titles, and six have won gold, silver and bronze medals at the World Cup. Lothar Matthäus has played in a record 25 World Cup matches, and his participation in five World Cup tournaments is a joint record, shared with Antonio Carbajal of Mexico. Miroslav Klose is the highest goalscorer in the tournament's history with 16 goals, while Gerd Müller is third with 14 and Franz Beckenbauer is one of only two men to win the World Cup as a player and as a coach.
Document 8: 1992–93 U.C. Sampdoria season: U.C. Sampdoria continued its decline and finished in seventh position in Serie A, once again missing out on international competitions. New coach Sven-Göran Eriksson came to a squad that had lost its main striker Gianluca Vialli, but despite his absence Sampdoria scored 50 goals in 34 matches, but the defence leaked in an uncharacteristic manner for Eriksson's teams.
Document 9: 2009–10 Genoa C.F.C. season: Genoa C.F.C. had a mixed season, in which it struggled to replace world-class striker Diego Milito, who moved on to Internazionale, where he was key in it winning the treble in 2010. Such a player was difficult to find on the market, and his Argentinian replacements Hernán Crespo and Rodrigo Palacio lacked the final punch. Crespo had it in his younger years, of course, but despite four goals in the autumn, he was offloaded to Parma, as Genoa put its faith in David Suazo for the goalscoring. Sergio Floccari also departed, and the Lazio signing scored more goals for the Roman club in half the year than what any player did for Genoa the whole season, while Suazo became a flop. The defence did not perform at expected level either, and even though the team scored several goals by many players, the defensive holes ensured the team did not repeat the fifth position from the year before.
Document 10: Ivica Olić: Ivica Olić (] ; born 14 September 1979) is a retired Croatian professional footballer. During his career, he played for German Bundesliga clubs such as Hamburger SV, VfL Wolfsburg, and Bayern Munich and also for the Croatia national team. Olić primarily plays as a striker but can also operate as a winger. He has been described as a relentless pursuer of the ball and possessing "power and a decent bit of pace with him". Former Croatia manager Slaven Bilić described him as a typical "match-winner" and "king of important matches" due to his ability to score in important matches against big opponents.
Document 11: 1989–90 Serie A: 1989–90 of the Serie A was another dominant year for Napoli, with Diego Maradona being among the leading goalscorers in Serie A (16 goals), behind Marco van Basten of Milan (19 goals) and Roberto Baggio of Fiorentina (17 goals). But while Baggio's Fiorentina narrowly avoided relegation, Maradona's Napoli won their second Serie A title in four seasons, while Van Basten helped Milan retain the European Cup as compensation for their failure to win the Serie A title, having finished two points behind Napoli. Demoted to Serie B for 1990–91 were Udinese, Verona, Cremonese and Ascoli.
Document 12: 2008–09 Genoa C.F.C. season: Genoa C.F.C. enjoyed its best season in recent history and finished fifth in Serie A. Topscorer Diego Milito hit the back of the net 24 times, and earned a move to Inter prior to the 2009-10 season. The ex-player and 29-year-old Argentinian Milito, arrived from relegated Spanish side Real Zaragoza, and the returnee performed his best season yet. Thanks to his goals and Thiago Motta's midfield display, Genoa finished in the top 5, and nearly pipped Fiorentina to the final Champions League spot. Motta was also sold to Inter in the summer, which left a huge fold in the Genoa squad.
Document 13: Michael Ballack: Michael Ballack (] ; born 26 September 1976) is a retired German footballer. He is among the top goal scorers in the history of the German national team. Ballack wore the number 13 shirt for every team he has played for, save for 1. FC Kaiserslautern. He was selected by Pelé as one of FIFA's 125 Greatest Living Players, and as the UEFA Club Midfielder of the Year in 2002. He won the German Footballer of the Year award three times – in 2002, 2003 and 2005. Ballack was known for his passing range, powerful shot, physical strength and commanding presence in midfield.
Document 14: 1998–99 Udinese Calcio season: Udinese Calcio only faded a little bit compared to its club record-breaking 1997–98 season, in which it finished third in Serie A. With topscorer Oliver Bierhoff, midfielder Thomas Helveg and coach Alberto Zaccheroni all departing for Milan, Udinese was looking to be on the back foot prior to the start of the season.
Document 15: 1996–97 Udinese Calcio season: Udinese Calcio had its best season since the days of Zico in the club during the 1980s. With goal scoring trio Oliver Bierhoff, Márcio Amoroso and Paolo Poggi on top form, Udinese finished fifth, even troubling the top three in the standings. Bierhoff and Poggi scored 13 goals each, while Amoroso hit the back of the net on 12 occasions. Despite the sensational results, coach Alberto Zaccheroni remained at the small club, while 1997–98 looked set to become a further improvement for Udinese.
ground_truth: Alberto Zaccheroni