Complex sentence: By this time he had been converted to a wing half, Brentford were relegated to the Second Division at the end of the 1946-47 season, and he was signed by Arsenal in July 1947 for £10,000.
Split into simpler sentences: By this time he had been converted to a wing half, Brentford were relegated to the Second Division at the end of the 1946-47 season. He was signed by Arsenal in July 1947 for £10,000.