Complex sentence: In January 2003 he was sold to Mexican club Querétaro F.C. for US $1,200,000 but, in the transfer agreement, it was established that the player would stay with Vélez until the end of the season.
Split into simpler sentences: In January 2003, he was sold to Mexican club Querétaro F.C. for US $1,200,000. In the transfer agreement, it was established that the player would stay with Vélez until the end of the season.