I'm mixed on this, if it's true.
I'd love it, because it'd be cool to see my favorite player back in the league, even if it's only for a few months. I also like the Mavs. They're probably my favorite team in the Western Conference, and I like Mark Cuban.
However, it'd be weird to not see him on the Pacers, but there's no reason at all for him to play for the Pacers, if he were to return. Also, this would kill one of his best quotes, because he'd be doing the same. He burned Gary Payton and Karl Malone for forgoing loyalty and biting on the Lakers to try and get a ring.