File this one under wishful thinking. Chris Brown is back on top in the eyes of most fans, but he still might have a lot of convincing to do if he wants to get Jay-Z's approval for a desired collaboration with Beyonce. SingersRoom is reporting that Breezy would like to duet with the "Halo" singer. “I really wanna do a song wit Beyonce!!!” Brown reportedly wrote on twitter “Imagine the dancing! CraZzzzzzy.” Jay-Z and Beyonce are very close to Rihanna. And were said to be very upset when Brown physically assaulted her two years ago. There were rumors that Hov had blackballed Chris from being able to perform a Michael Jackson tribute at the 2009 BET Awards. Jay flatly denied it: "That's the silliest rumor I ever heard," Jay told Tim We