Complex sentence: He played there till the December 2008 when he goes to Efes Pilsen but there stayed only couple weeks and played five Euroleague games, and then returned to Darüşşafaka where he finished the season.
Split into simpler sentences: He played there till the December 2008 when he moved to Efes Pilsen. With Efes he stayed only couple weeks and played five Euroleague games, and then returned to Darüşşafaka where he finished the season.