If its true, i have to say that's a good signing by citeh. the majority of their strikers are poor(ade, jo, santa) or want to leave next season (balotelli, tevez)
dzeko is prob one of the best poachers in europe and although he costs some, he'll be a guarentee for goals. when they signed silva and yaya this summer they had more or less secured the creative part, if tevez leaves them dzeko is a pleasent replacement for them.