Where does Nico Rosberg go from here?

[Bagwan]

I didn't think it was anybody specific as he said 'drivers'.

But if I had to speculate I would say perhaps Nico has been more difficult seeing as he has been the one behind and publicly unhappy for much of the season.

You're right that he did say "drivers" , but given that Nico has been unhappy with Lewis , not Merc , and Lewis has been unhappy with the team because of strategy , the second part of the statement seems to be directly pointed at Hamilton , doesn't it ?
Add it to recent events and I think it is , albeit couched in political correctness with the added "s" .

It was within an interview where he said one would have to go if they couldn't get along .

This was , in my opinion , a direct shot across the bow , and with Nico having just poled and won the last three , a warning for the Lewis camp .
He was just told that nobody is bigger than the team .