Which non-guaranteed Mavericks player can make the team?

The Dallas Mavericks have fifteen guaranteed deals but have brought in Charlie Villanueva, Ivan Johnson, Eric Griffin, and Doron Lamb to fill the preseason roster.
Each offers a different skill set to the Mavs. Charlie V has struggled over the last few years can be a good off bench option as a stretch-four. Johnson will bang down low. Lamb can be a perimeter threat at the guard spot. Finally, Griffin brings plenty of athleticism and highlights at the wing spot.
Will any of the camp invites/non-guaranteed players make the roster?
Brian Gosset (@Gosset41): Doron Lamb or Charlie Villanueva. The latter has proven to be a starter in this league while Lamb is a youngster who can provide a nice spot at the 2 or 3, if Ledo doesn’t see a lot of time and if Gal Mekel gets demoted.
Kieran Hairell (@khairell): *sighs* I’m going to be non-commital and go the other way – Doron Lamb will 100% not make the final roster. Nice spot up shooter, but that’s all he’s got going for him.
Winston Zhang (@The_Stepback): None of them, but I would’ve liked Ivan Johnson on the final roster. I think every winning team needs one ‘crazy’ guy (ala DeShawn Stevenson), and having someone who can come in and rough things up would’ve be nice.
Bailey Rogers (@BRogers): I’m not sure anyone will make it, but if I have to pick, I’ll go with Doron Lamb. This is mostly because I think that if anyone gets cut, it’ll be Gal Mekel, and Lamb is the obvious choice to replace him. He is young and talented and gives the Mavs another option at SG if Ledo doesn’t pan out.
Sameer Moosa: Charlie Villanueva. I don’t think anyone with a non-guaranteed contract will make it, but if I had to pick, I’d go with Charlie-V. His experience and outside shooting could prove to be beneficial to dallas, especially with Carlisle loving big guys who can shoot.
Ace Feltman (@MFFeLtman): Charlie Villanueva. Rashard Lewis was the stretch four that the Mavericks wanted. Charlie Villanueva can be it. Like Lewis he really isn’t much more than a stretch four but with a coaching and training and developmental staff like the Mavs have I think there’s something admirable in Villy’s skill set. I mean he once got $35 million dollars, albeit from Joe Dumars.
Rami Michail (@RamiMichail): Charlie V. A few strong showings and I’d say he’s a lock.