Actually just checked this. 2016/17 Net Spend was reported as £23m, in a year when we sold one player for £50m.
Previous 5 season average for Everton was £13.5
(http://www.transferleague.co.uk/pre...tables/premier-league-table-last-five-seasons)
I think the fee for Stones was less more like £47.5 million ignore fees paid to agents etc one thing you can't ignore is that 15% of the fee or around £7.0 million went to Barnsley. That £23 million is more like £13.5 million