Michael Jackson’s older brother Jermaine is busy trying to salvage his Michael Jackson Tribute concert in Vienna after online media floated rumors that the two biggest names on the lineup won’t appear.

According to to Reuters, Jermaine, 54, confirms that Mary J. Blige will be busy at a fashion event in Italy that same day. But he claims she will fly in to perform the second half of the concert, which is scheduled for Sept. 26.

We already know that Chris Brown is a convicted felon who probably can’t leave the country without permission from his probation officer. But Jermaine says, “He wants to be here. It’s just up to what he’s going through with his court case right now. “He’s definitely going to be here.”

Jackson also denied rumors that his family refuse to throw their full support behind the tribute concert.

“I invited my mother, I invited my brothers and sisters as well,” he said during a news conference in London. “I am not happy with the talk being said in the press about the support isn’t there. My mother from the very start supported this.”

Of course he’s referring to TMZ’s report that his mother, Katherine Jackson, and brothers question why Jermaine is holding a tribute concert in a city that has no connection to Michael.