Diddy may be busy trying to get his oft-delayed Dirty Money project, “Last Train To Paris,” off the ground, but that hasn’t stopped the ambitious mogul from making other prominent career moves. A source close to the entrepreneur/rapper has confirmed to Billboard.com that Diddy is not only co-managing Lil Wayne protégé Nicki Minaj but also Rick Ross.

Last week, just two days after dropping out of Rihanna’s “Last Girl On Earth Tour,” Nicki Minaj’s former manager, Debbie Antney — who also managed Gucci Mane and is mother to up-and-coming rapper Waka Flocka Flame — sent a statement confirming Minaj had fired her.

“I received a letter, which was [a] suspension. The next letter that came in was a cease and desist in doing all business with Nicki Minaj from Nicki’s attorney,” she explained. “I love Nicki. I wish her the most success. It’s not about the music, she’s like one of my children… I wish her no harm, only much success.”

While hip-hop bloggers have speculated the firing was due to mismanagement on Antney’s part which consequently caused Minaj to drop out of the tour, Antney revealed to Billboard.com almost a month ago — before the tour was announced — that she no longer was working with Minaj “I’m not gonna sit here and drop a bunch of bombs on her now, even though she really, really disappointed me. Now Nicki did fire me. She did,” Antney said.