FACTBOX-Ukrainian bonds subject to restructuring

KIEV, May 20 (Reuters) - Ukraine is trying to persuade bondholders to restructure debt to allow it to plug a $15.3 billion funding gap in a $40 billion bailout package led by the International Monetary Fund. The restructuring deal put forward by Kiev foresees extending the maturity of the bonds and reducing the coupon and the principal. But a committee of Ukraine's largest bondholders insist a so-called 'haircut' is not necessary. The Ukrainian parliament passed a law on Tuesday that gives th...