Complex sentence: In the summer of 2012, İsayev left Gabala to join AZAL, six months later İsayev left AZAL to join Denizlispor on a contract until the summer 2014.
Split into simpler sentences: In the summer of 2012, İsayev left Gabala to join AZAL. In January 2013, İsayev left AZAL, moving to Denizlispor on a contract until the summer 2014.