The Dallas Mavericks were scheduled to audition veteran forward Kevin Willis for the first of two workouts Thursday in an attempt to fill a vacant roster spot, according to a published report.

Mavs coach Avery Johnson told the Dallas Morning News that he has been looking to add another big man to the roster but concedes there is a possibility he won't sign anybody at all.

"Right now, it's kind of the best available person," Johnson told the newspaper. "I'm real leery about adding anybody right now. But if there's something that makes sense, we'll do it. But it's got to really make sense for us."