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?
Sentence (from "2004–05 FC Bayern Munich season"): 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.
Relevant evidence: No