Complex sentence: Bell established himself in the first team in December 2004, starting 18 times in the remainder of the 2004--05 season, and signed a new two-year contract in June 2005.
Split into simpler sentences: Bell established himself in the first team in December 2004, starting 18 times in the remainder of the 2004--05 season. He signed a new two-year contract in June 2005.