I guess not necessary that the buyer gets categorized as Promoter.
Would be good if above players come in, but I doubt that it will happen. Let's see, we will know in coming days.
One also needs to think in terms of how would the NIM and Interest Spread behave going ahead. It will peak out at some point if not peaked already.
I think numbers related to such announcements would already have been factored in the results, etc. Such announcements would follow these properties already been recognized as NPA and not other way round (I am making an educated guess here, so please research on your own).
Also, NPAs shouldn't be viewed in isolation and provisioning numbers should also be taken into account as NPA ratios can mislead due to higher provisioning. I haven't maintained a spread sheet etc., but I normally do back of the envelope calculations and compare provisioning numbers as percentage of total income and net interest income to see if this percentage is rising. I think this number has more or less been stable or within a narrow range in last few years. That said I don't know what is the optimum percentage for this or what is the same percentage for other players.