Limitations to D’Antoni, Gentry and Popovich could leave their three teams at a significant competitive disadvantage in Orlando. Executives with the three franchises — and elders of the National Basketball Coaches Association — have been in consistent contact with the league office on the matter, sources said. D’Antoni and Gentry have been publicly and privately frustrated with the possibility that they could be left off the team’s bench — or even left out of the bubble — and fear a decision to limit or omit them could become death knells to their careers.