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Ronaldus "Ronald" de Boer ((:ˈroːnɑld də ˈbuːr);〔''Ronald'' in isolation: (:ˈroːnɑlt).〕 born 15 May 1970) is a retired Dutch football midfielder who played for the Dutch national team as well as a host of professional clubs in Europe. He is the twin brother of Frank de Boer. He had the vast majority of his career success with Ajax. He currently works as Ajax A1 assistant manager. ==Club career== De Boer's first youth club was De Zouaven in Lutjebroek where he played before being selected for the Ajax youth programme in 1983. On the professional club level, De Boer played for Ajax (1988–91 and 1993–99), Twente (1991–93), FC Barcelona (1999–2000), Rangers (2000–04), Al-Rayyan (2004–05) and Al-Shamal (2005–08). In both Qatari clubs, he was reunited again with his brother Frank, his teammate at Ajax, Barcelona and Rangers. In his first spell at Ajax from 1988 to 1991, he won the Eredivisie title in 1989–90 under manager, Leo Beenhakker. After two seasons at FC Twente from 1991 to 1993, he returned to Ajax under manager Louis van Gaal, and had his most successful spell as a player, winning three consecutive Eredivisie titles in 1993–94, 1994–95, and 1995–96. He also won the 1995 UEFA Champions League, the 1995 Intercontinental Cup, and the 1995 UEFA Super Cup. He was also a runner-up of the 1996 UEFA Champions League, where Ajax lost on penalties to Juventus. When Louis van Gaal left Ajax for FC Barcelona in July 1997, Morten Olsen became the new Ajax manager, and De Boer won a fifth Eredivisie title in 1997–98 and also won the 1997–98 KNVB Cup. There was then controversy soon after De Boer and his twin brother, Frank, signed a six-year contract extension with Ajax at the start 1998–99 season, when Ronald and Frank took successful legal action to have the contract voided. Ajax had agreed verbally that if a lucrative offer for one brother came by, he would be released provided the other stayed. However, Ajax apparently backed down on that agreement after floating the club on the stock market and pledging to shareholders that it would hold both of the De Boers and build around them a team to recapture the UEFA Champions League.〔(The De Boers tackle contract law ) New York Times, 29 July 1998.〕 The fallout over the contract situation led to an increasing conflict between the de Boer twins and the Ajax hierarchy, with match results for Ajax suffering and manager Morten Olsen soon getting sacked. In January 1999, Frank and Ronald signed for FC Barcelona for £22 million, joining their former Ajax manager Louis van Gaal at the Camp Nou. While De Boer was impressive at Ajax during the 1990s and for the Netherlands up to and including the 1998 FIFA World Cup, his high-profile transfer to Barcelona in January 1999 marked what would be an unlikely bad patch for a prolific goal-scoring midfielder, as he managed to feature in only 33 La Liga games for the club and scored just one goal in La Liga. In the 2000–01 season, he opted to join the Dutch legion at Rangers under the manager Dick Advocaat. Among the Dutch internationals who at that time played for Rangers were Bert Konterman, Arthur Numan, Fernando Ricksen and Giovanni van Bronckhorst. He spent four seasons with the club before joining Al-Rayyan after the 2003–04 season. De Boer recovered from surgery on a neck injury and decided not to play in Al-Shamal's last two games of the 2006–07 season. On 19 March 2008, De Boer canceled his contract with Qatar outfit Al-Shamal and retired. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ronald de Boer」の詳細全文を読む スポンサード リンク
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