Complex sentence: In July 2009, Valle would be bought by CD Castellón, with Racing retaining an option to reacquire the player; however, merely five months later, he returned to Ponferrada, in the same predicament, until the end of the season.
Split into simpler sentences: In July 2009, Valle was bought by CD Castellón, with Racing retaining an option to reacquire the player. However, merely five months later, he returned to Ponferrada, in the same predicament, until the end of the season.