Complex sentence: On August 7th, 2009 O'Brien signed a contract for the remainder of the season with the Montreal Impact, joining his brother Ciaran O'Brien who was on loan with the same team.
Split into simpler sentences: On August 7th, 2009 O'Brien signed a contract for the remainder of the season with the Montreal Impact. His brother Ciaran O'Brien is currently on loan with the same team.