Question: What Dutch football manager was previously a key player for FC Bayern Munich in 2004-05 to win the German double for their second time in three seasons?

Context paragraphs:
2016–17 FC Bayern Munich season: The 2016–17 FC Bayern Munich season was the 118th season in the football club's history and 52nd consecutive and overall season in the top flight of German football, the Bundesliga, having won promotion from the Regionalliga in 1965 after winning the Regionalliga Süd.  Bayern Munich also participated in this season's edition of the domestic cup, the DFB-Pokal, and the premier continental cup competition, the UEFA Champions League.  Bayern were the reigning Bundesliga and DFB-Pokal champions, and therefore also participated in the German super cup, the DFL-Supercup.  It was the 12th season for Bayern in the Allianz Arena, located in Munich, Germany.  The season covers a period from 11 July 2016 to 30 June 2017.

2017–18 FC Bayern Munich season: The 2017–18 FC Bayern Munich season is the 118th season in the football club's history and 53rd consecutive and overall season in the top flight of German football, the Bundesliga, having been promoted from the Regionalliga in 1965.  Bayern Munich also are participating in this season's edition of the domestic cup, the DFB-Pokal, and the premier continental cup competition, the UEFA Champions League.  Bayern are the reigning Bundesliga champions, and therefore also are participating in the German super cup, the DFL-Supercup.  This is the 13th season for Bayern in the Allianz Arena, located in Munich, Bavaria, Germany.  The season covers a period from 1 July 2017 to 30 June 2018.

1987–88 FC Bayern Munich season: The 1987–88 FC Bayern Munich season was the 88th season in the club's history and 23rd season since promotion from Regionalliga Süd in 1965.  Bayern Munich finished as runner-up in the Bundesliga to SV Werder Bremen.  The club reached the quarterfinals of both the DFB-Pokal and the European Cup.  The inaugural DFB-Supercup was won by Bayern Munich over Hamburger SV.  This season was the first season under manager Jupp Heynckes, who replaced Udo Lattek.

2004–05 FC Bayern Munich season: FC Bayern Munich won the German double for the second time in three seasons, ensuring the first season for Felix Magath as manager was a successful one.  With several German clubs suffering from financial difficulties at the time, the title race was a casual stroll for Bayern's star-filled squad, winning by 14 points, since sole rival Schalke 04 fell apart in the last month of the season.  Among the key players in the success were Roy Makaay and playmaker Michael Ballack.

Roy Makaay: Rudolphus Antonius "Roy" Makaay (born 9 March 1975) is a Dutch football manager and former footballer who played as a centre-forward.  He was known for his goal-scoring ability as a result of his "aerial prowess and quick drives to the net where he can put the ball away with either foot."

Wolfgang Grobe: Wolfgang Grobe (born 25 July 1956) is a German football coach and a former player.  As of June 2011, he works as a scout for FC Bayern Munich.  As a player, he spent nine seasons in the Bundesliga with Eintracht Braunschweig and FC Bayern Munich.

Karin Danner: Karin Danner (born 22 January 1959) is a German football manager and former footballer.  She has been the manager of FC Bayern München since 1995 and previously played for the Germany women's national football team in 1984 as well as FC Bayern München.  On club level she played for FC Bayern München.

FC Bayern Munich Junior Team: The FC Bayern Munich Junior Team is the youth academy for German football club Bayern Munich.  The Junior Team was created in 1902 and restructured in 1995.  It has educated many players who have become regulars in the Bundesliga and Germany.  The vision for the Junior Team is ""to educate young players so that it will be possible for FCB to keep a global position in club football in the next millennium and its mission is "to have the best youth development in club football.  Bayern Munich have to test before the school will accept and you can study free until you graduate if you have a talent.""  Rosters remain unchanged while players train for their position.  Bayern Munich Junior Team uses a 4–3–3 formation good system.  Bayern Munich has scouts all over the world.  Bayern Munich has developed a ""Talent Day"".  In 2003, Bayern Munich started partnering with other football clubs.  The penultimate stage for youngsters at Bayern is Bayern Munich II.

FC Bayern Munich: Fußball-Club Bayern München e.V., commonly known as FC Bayern München (] ), FCB, Bayern Munich, or FC Bayern, is a German sports club based in Munich, Bavaria (Bayern), Germany.  It is best known for its professional football team, which plays in the Bundesliga, the top tier of the German football league system, and is the most successful club in German football history, having won a record 27 national titles and 18 national cups.

1984–85 FC Bayern Munich season: The 1984–85 FC Bayern Munich season was the 85th season in the club's history.  Bayern Munich won its 7th Bundesliga title, reached the semi-final of UEFA Cup Winners' Cup, and finished as runner-up of DFB-Pokal.  This season was the second season of Udo Lattek's second stint as manager of the club.  The Bundesliga campaign started 25 August 1984 with a 3-1 victory over Arminia Bielefeld.  Bayern Munich, 1.  FC Köln, and Borussia Monchengladbach were tied for first place after Round 1.  From Round 2 through Round 34 of the season, Bayern Munich were the lone team in first place.  Qualification for the 1984–85 European Cup Winners' Cup was a result of winning the 1983–84 DFB-Pokal.

Supporting paragraphs: 2004–05 FC Bayern Munich season Roy Makaay
Answer: Roy Makaay