Not sure if this means anything, as I don't know what kind of deal it was, but the news is that he signed a contract today.
If it was a guaranteed deal then that would be 15 guys on contract (including Bell) and would set the roster. Even if Bell gets bought out it seems unlikely that the Jazz would pick up another guy as they usually like to keep a roster spot open going into the season.
If it is non-guaranteed then it means that Murphy still needs to make the team, and that camp will be a little more interesting, as the Jazz will still effectively have a roster spot to fill.