Question: Name the retired German footballer who played as a striker, possessing great aerial ability and finishing skills and considered one of the key players for VfB Stuttgart in the 2003-04 season where they only just failed to finish in the top three for the second season in succession?
Sentence (from "Christian Gentner"): He won the Bundesliga twice, with VfB Stuttgart in 2007 and VfL Wolfsburg in 2009.
Relevant evidence: No