Complex sentence: Hall's performances at Chesham came to the attention of Dowie's brother Iain, manager of Oldham Athletic, who bought him for £30,000 during the 2001/02, he made his debut in April 2002 and scored the winner against Stoke City.
Split into simpler sentences: Hall's performances at Chesham came to the attention of Dowie's brother Iain, manager of Oldham Athletic, who bought him for £30,000 during the 2001/02 season. He made his debut in April 2002 and scored the winner against Stoke City.