Remember when Rihanna wished Ciara luck booking a stage to perform on? Well it looks like the singer may now need a bit of that luck herself. According to the New York Post, ticket sales for Rihanna’s concert in key markets are not selling very well, prompting her manager to suggest she cancel those dates. Shows in Phoenix, Dallas, Atlanta, Denver and Indianapolis are all expected to be cancelled, while a show in Boston is still expected to go on. The Boston show at T.D. Garden Arena however has also experienced low sales, selling only 3,700 tickets out of a possible 20,000. So what do the singer and her ROC Nation label have to say about the matter? Well, they apparently aren’t talking. Someone who is talking however is Ciara. Check out the coy little tweet she sent out earlier.