Adnan Ahmed Yousif, the head of Al Baraka Banking Group, said Turkey, and especially Istanbul, had the potential to become a hub for financial services. Yousif, who is the president and CEO of the Bahrain-based group, said Turkish economic administrators were aiming to broaden the services offered to customers, with special focus on participation banks. He also said Turkey's huge potential might facilitate the interest of investors from the Gulf countries as well as create new opportunities for the recently expanding sukuk market in Turkey.Turkey and especially Istanbul, is very close to participation banking markets, such as the GCC and Europe.