Complex sentence: Although born in Morocco, he was raised in Belleville in France and spent his early career in French football, with Nîmes Olympique, before signing for FC Metz, who loaned him to USL Dunkerque and AS Saint-Étienne respectively.
Split into simpler sentences: Although born in Morocco, he was raised in Belleville in France. He therefore spent his early career in French football, with Nîmes Olympique, before signing for FC Metz, who loaned him to USL Dunkerque and AS Saint-Étienne respectively.