Complex sentence: The first half of 2007 saw the midfielder transferring to Mexican side Necaxa, which signed him to play for the team in the 2007 Copa Libertadores, later making a move to Uruguay to play for Defensor Sporting in the second semester of 2007.
Split into simpler sentences: The first half of 2007 saw the midfielder transferring to Mexican side Necaxa, which signed him to play for the team in the 2007 Copa Libertadores. He then made a move to Uruguay to play for Defensor Sporting in the second half of 2007.