VfL Bochum loses Kiel defender Köster. The 25-year-old defender joins Kiel. The transfer is a significant step for Kiel. Köster was an important player for VfL Bochum. He has played many games for the club. The transfer is a loss for VfL Bochum. The club must now find a new defender. Köster will be an important player for Kiel. He will play many games for the club. The transfer is a significant step for Kiel. The club will now have an important player more. Köster will be an important player for Kiel. He will play many games for the club. The transfer is a significant step for Kiel. The club will now have an important player more.