So, if we buy Sanchez and a centre back we might end up touching £280-300m in purchases, which if amortized over 5 years, adds £55-60m pa to the P&l expenditure.
It appears that so far we've brought in £67m in fees, most of which (say £55m) represents profit on disposal. We might sell also sell Delph, Mangala, Bony and Nasri but will probably do no better than break even on those players, might make a loss.
The profit on disposal almost offsets the additional amortization costs in 2017/18 (but not in future years).
In 2017/18 we will no longer have amortization costs for players who have left this summer at the end of their contract. Not sure how much that's worth.
And then there is the increase/decrease in the wage bill, which given the large number of players who have left (and Yaya's pay cut!) the savings on wages for the leaving players should more than pay for the wages of the incoming players.
Overall the players ins/outs this sumer should have a favourable effect on the accounts for 2017/18.
Looking a year ahead though, we will still have the £60m (ish) amortization costs for this year's purchases (plus any new signings). At the moment we don't have any profit on disposals of players to offset that. So if the club wishes to maintain player expenses (wages + amortization) in 2018/19 at a similar level to 2017/18 then we need to sell a few more players at a profit.
Doesn't this highlight how important it is for the club to keep finding players such as Kelechi, Unal, Mooy to trade in order to fund acquisitions?