From what I've heard, the rest of the year will be focused on European headcount. Apparently they have basically the same HC as the US, but bringing in half the revenue. The balance is way out of wack.
Some of my German friends have told me about a retirement package being offered in Q2, so likely 100+ people will exit from Germany in the next quarter or two.
A lot of this will be offset with significant hiring in Sales & Cloud plus some folks that could be added from M&A.
Whoever said the plan is to get to 5000HC by the end of FY18 is foolish. That would be over 40% drop in HC in 9 months - impossible.
Odd's are EoFY18, Avaya will have ~7800HC +- 100