If that fine is spread over 3 years then in essence they will have to spend 16m less in order to achieve the exact same profit/loss in the coming year. Presumably they will have to reduce their spending by that 16 per year plus more again in order to bring themselves in line with ffp.
It's actually a very clever idea. Massively over spending for 1 year would be damaging, continuing to do it and flouting the rules would not only financially batter a club with ascending fines and restrictions, it would make it harder to get back to square one than clubs who didn't inject funds in the first place.
I do think it is interesting how FFP is panning out. I cant help but feel that City have already budgeted for the likely consequences. I particularly like this article on City's approach to FFP.
http://www.financialfairplay.co.uk/latest-news/man-city-failure-of-ffp-test-a-matter-of-choiceAs you say a 16m fine that must be absorbed by your costs is a disincentive to overspend. However, City's wage bill is GBP233m which is 100m more than Liverpool's - from that perspective 16m is a drop in the ocean. As the article above points out they quickly got rid of Mancini (and included the costs in their June year end figures) adding all the costs into the qualifying year so that it would give them a high figure from which to then produce a lower one. The cost of sacking Mancini was 10m which they could have pushed into this financial year.
I also think that PSG/City have scored some notable wins with the FFP review. For instance PSG have a 'deal' from the Qatar tourism authority worth up to Euro200m a year which FFP have valued at Euro100m a year (according to L'Equipe). Now at Euro100m that is roughly equivalent to the whole of Liverpool's commercial income - so it is pretty hard to believe that is a fair value of an arms length agreement. In fact it gives a license to the few club owners who happen to own and run their own countries to doctor commercial revenues going forward.
And at the end of the day I cant help but feel that the 'headline' offenders will 'vaguely' fall in line with FFP out of self interest. What FFP will achieve is to entrench the big football clubs in their position as big football clubs. No longer will anyone be able to afford to create a 'big football' club. And, of course, City and PSG will have beaten the deadline and made themselves into a big club. I doubt they want anyone else joining them.