Complex sentence: However in the winter transfer window or 2006-07, he was loaned out to Second Bundesliga side 1.FC Koln due to the lack of opportunities and having lower seniority than Nicolas Frutos, Mohammed Tchite and Mbo Mpenza.
Split into simpler sentences: However in the winter transfer window or 2006--07, he was loaned out to Second Bundesliga side 1. FC Köln due to the lack of opportunities and having lower seniority than Nicolas Frutos, Mohammed Tchite and Mbo Mpenza.