Complex sentence: At the end of the 1993--94 season, they played their last game at a terraced Villa Park before it was converted over the summer to an all-seater stadium to comply with the Taylor Report.
Split into simpler sentences: At the end of the 1993--94 season Villa played their last game at a terraced Villa Park. In the summer, the stadium was converted into an all-seater stadium to comply with the Taylor Report.