Question: Slaven Bilić who described Ivica Olic as a typical "match-winner" and "king of important matches" is a manager of which club?

full_context: Document 1: Mario Götze: Mario Götze (] ; born 3 June 1992) is a German professional footballer who plays as an attacking midfielder for German Bundesliga club Borussia Dortmund and the Germany national team. Although his favoured position is that of a playmaker. Götze possesses speed, technique, dribbling skills, and playmaking capabilities. In 2010, German Football Association's then technical director Matthias Sammer described Götze as "one of the best talents Germany has ever had."
Document 2: Luka Modrić: Luka Modrić (] ; born 9 September 1985) is a Croatian professional footballer who plays for Spanish club Real Madrid and captains the Croatia national team. Modrić plays mainly as a central midfielder but can also play as an attacking midfielder or as a defensive midfielder, usually deployed as a deep-lying playmaker.
Document 3: Edin Džeko: Edin Džeko (] ; born 17 March 1986) is a Bosnian professional footballer who plays as a forward for Serie A club Roma and the Bosnia and Herzegovina national team, for which he is captain.
Document 4: Slaven Bilić: Slaven Bilić (; born 11 September 1968) is a retired Croatian professional footballer and current manager of Premier League club West Ham United.
Document 5: Zvjezdan Misimović: Zvjezdan Misimović (, ] ; born 5 June 1982) is a Bosnian former footballer who most notably played for Bayern Munich, VfL Wolfsburg, Galatasaray, Dynamo Moscow and Beijing Renhe as an attacking midfielder, during his active playing career. Misimović is the second most capped player in the history of the Bosnia and Herzegovina national team, capped 84 times. His 25 international goals also makes him his country's third top-goalscorer. He represented Bosnia and Herzegovina at 2014 FIFA World Cup.
Document 6: Robert Lewandowski: Robert Lewandowski (] ; born 21 August 1988) is a Polish professional footballer who plays as a striker for Bundesliga club Bayern Munich, and captains the Poland national team.
Document 7: West Ham United F.C. managers: London football team, West Ham United have had only fifteen permanent managers in their history and an additional three caretaker managers. Up until 1989 the club had only had five different managers. Before the appointment of Gianfranco Zola in 2008 the club never had an overseas manager, with the only non-Englishman being the Scot, Lou Macari. The current manager is Slaven Bilić who was appointed in June 2015. The most recent manager before that was Sam Allardyce who was appointed in May 2011 and left the club in May 2015. Numerous former West Ham players have taken on temporary managerial roles at the club, between permanent managers. Ronnie Boyce briefly took the reins, in February 1990, between Macari's resignation and the appointment of Billy Bonds. Former Hammer's player and board member Trevor Brooking was briefly in charge during two separate spells as caretaker manager in 2003, first during the illness of Glenn Roeder and again between Roeder's sacking and the appointment of Alan Pardew. Former player Kevin Keen has been caretaker manager twice; immediately prior to Gianfranco Zola's appointment in 2008 and after the sacking of Avram Grant in 2011.
Document 8: Roy Ferenčina: Ferenčina spent his entire career playing for Croatian clubs and he had spells at Dinamo Zagreb, Trešnjevka, Inter Zaprešić, Marsonia and Hrvatski Dragovoljac before coming to Slaven Belupo in 1997. Ferenčina is mainly remembered for his time at Slaven, where he spent the last 8 years of his playing career, appearing in a total of 172 matches and scoring 11 goals for the club. Ferenčina retired from football in February 2005 after a fallout with Slaven manager Branko Karačić during the club's winter break friendly game at the Andrija Anković Memorial Tournament.
Document 9: 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 10: Franck Ribéry: Franck Henry Pierre Ribéry (] ; born 7 April 1983) is a French professional footballer who plays for German club Bayern Munich. He is a former France national team player. He primarily plays as a winger, preferably on the left side although being right-footed, and is known for pace, energy, skill and precise passing. Ribéry is described as a player who is fast, tricky and an excellent dribbler, who has great control with the ball at his feet. Since joining Bayern, he has been recognised on the world stage as one of the best French players of his generation. The previous talisman of the French national team, Zinedine Zidane, has called Ribéry the "jewel of French football".
Document 11: Asmir Begović: Asmir Begović (] ; born 20 June 1987) is a Bosnian professional footballer who plays as a goalkeeper for Premier League club Bournemouth and the Bosnia and Herzegovina national team, for which he is vice-captain.
Document 12: Thomas Müller: Thomas Müller (] ; born 13 September 1989) is a German professional footballer who plays for and vice-captains Bayern Munich and the German national team. A versatile player, Müller plays as a midfielder or forward, and has been deployed in a variety of attacking roles – as an attacking midfielder, second striker, centre forward and on either wing. He has been praised for his positioning, teamwork and stamina, work-rate, and has shown consistency in both scoring and creating goals.
Document 13: Darijo Srna: Darijo Srna (] ; born 1 May 1982) is a Croatian professional footballer who plays for Shakhtar Donetsk, which he captains. He also captained the Croatia national team from 2009 to 2016. He can play all across the right wing and is known for his crossing and free kick ability. He began his career at Hajduk Split, before moving to Shakhtar in 2003. He has won numerous trophies during his time at Shakhtar, including a UEFA Cup title in 2009, seven Ukrainian Premier League titles, five Ukrainian Cup titles and five Ukrainian Super Cup titles. Srna made his international debut for Croatia in November 2002. In 2009, then manager Slaven Bilić made him the captain of the national team, a position he would hold until retirement from international football in 2016.
Document 14: Mario Mandžukić: Mario Mandžukić (; born 21 May 1986) is a Croatian professional footballer who plays as a forward for Italian club Juventus and the Croatia national team. Besides being a prolific goalscorer, he is known for his great defensive contribution and aerial power.
Document 15: NK Slaven Belupo: NK Slaven Belupo, often referred to simply as Slaven and known internationally as NK Slaven Koprivnica, is a Croatian football club based in the city of Koprivnica in the north of the country. They play their home matches at Gradski stadion in Koprivnica.
ground_truth: Premier League club