As an incentive for FFP there should be a points incentive, one point for every million in profit pre-tax plus a positional multiplier. So Arsenal with their £7M profit last season would see 7 points added plus their fourth position meaning 7x4=28 points added to their total. It would also mean that smaller teams with smaller revenues do not endanger their future such as 9th placed Swansea having £21M profit last season would have got them 21x9=189 points added at the end of the season. Seems fair to me.
Anything that rewards you more for finishing lower in the league suits me considering where we've just finished. 17 x 7th = 119 points woohoo!!
Actually United didn't figure in the Top 3 for pre-tax profit and Arsenal were third with £7M. Swansea would be 100 points better than Manchester United in this fairer league.