Complex sentence: He played in Kassel, Germany and in 2005/2006 and 2006/2007 season he was chosen to the best defensman in the second league and also scored the deciding goal in the play-off finals, so Kassel returned to the DEL after two years.
Split into simpler sentences: He played in Kassel, Germany and in the 2005/2006 and 2006/2007 seasons he was chosen the best defenseman in the second league. He also scored the deciding goal in the play-off finals, so Kassel returned to the DEL after two years.