Complex sentence: Nish was a fan of his local side Hibernian as a child, but he started his career with Dunfermline, where he made his debut in the 1998--99 season.
Split into simpler sentences: Nish was a fan of his local side Hibernian as a child. Nish started his career with Dunfermline, where he made his debut in the 1998--99 season.