Complex sentence: In 1981, it became the first all-seater stadium in English football, though by the late-1990s the club's directors decided it was time to construct a larger stadium and chose a site in the Rowley's Green area of the city.
Split into simpler sentences: In 1981, it became the first all-seater stadium in English football. In the late 1990s the club's directors decided it was time to construct a larger stadium and chose a site in the Rowley's Green area of the city.