From all reports, Denver has become the front runner in Iverson sweepstakes. One thing that might be holding it up is that Denver is look for a third team to get involved and it sounds like they need an expiring contract. From the Denver Post:
The answer to both is close to nothing. Whatever Dallas would be able to get for Croshere wouldn't be important and I doubt Donn Nelson is looking to do the Nuggets any favors in their quest to land A.I.