Complex sentence: Helton began his career with Gueugnon and RM Hamm Benfica in Luxembourg before joining Ligue 1 side Saint-Étienne in 2009, playing mainly for their B team.
Split into simpler sentences: Helton began his career with Gueugnon and RM Hamm Benfica in Luxembourg. In 2009 he joined Ligue 1 side Saint-Étienne, but played mainly for their B team.