Complex sentence: Celtic won the 2006-07 Scottish Premier League in Jarošík's first season with the club, meaning that he has now won league medals in a record four countries-Czech Republic, Russia, England and Scotland.
Split into simpler sentences: Celtic won the Scottish Premier League in Jarošík's first season with the club. His league success with Celtic in the 2006-07 season meant that he has now won league medals in a record four countries-Czech Republic, Russia, England and Scotland.