UPDATE 1-Turkey's Bank Asya, Qatar's QIB end exclusive talks over Asya stake sale-sources

Qatar Islamic Bank (QIB) and Turkey's Bank Asya have ended exclusive talks over QIB acquiring a stake in the Turkish lender, with valuation concerns said to be behind the decision. Turkish state bank Ziraat Bank may now be the most likely partner for Bank Asya but the two banks have not officially begun talks. It is not clear what size stake has been under discussion. Bank Asya shares slumped 9.9 percent to 1.36 lira, their lowest since April 1, by 1304 GMT, on the news that Asya was no longer holding exclusive talks with QIB. Islamic lender Bank Asya has been under pressure to sell assets, after major investors sympathetic to Turkish Prime Minister Tayyip Erdogan withdrew deposits.