last 5 seasons Purchased Gross Sold Nett Per Season Aston Villa £159,550,000 £77,050,000 £82,500,000 £16,500,000 Middlesbrough £105,725,000 £40,025,000 £65,700,000 £13,140,000 Wolverhampton £55,825,000 £22,350,000 £33,475,000 £6,695,000 Sheffield Wed £27,725,000 £2,100,000 £25,625,000 £5,125,000 Sunderland £103,230,000 £79,650,000 £23,580,000 £4,716,000 Derby £54,180,000 £33,300,000 £20,880,000 £4,176,000 Cardiff City £57,225,000 £39,650,000 £17,575,000 £3,515,000 Norwich City £93,025,000 £73,500,000 £19,525,000 £3,905,000 Birmingham £25,805,000 £13,250,000 £12,555,000 £2,511,000 Fulham £72,230,000 £55,940,000 £16,290,000 £3,258,000 Millwall £6,350,000 £400,000 £5,950,000 £1,190,000 Reading £31,389,000 £26,050,000 £5,339,000 £1,067,800 Bristol City £22,750,000 £21,450,000 £1,300,000 £260,000 Preston £1,150,000 £300,000 £850,000 £170,000 Burton Albion £870,000 £2,000,000 -£1,130,000 -£226,000 Sheffield United £5,400,000 £6,250,000 - £850,000 -£170,000 Bolton £4,000,000 £5,125,000 - £1,125,000 £225,000 QPR £65,650,000 £73,450,000 -£7,800,000 -£1,560,000 Barnsley £9,400,000 £17,500,000 -£8,100,000 £1,620,000 Hull City £105,050,000 £114,450,000 -£9,400,000 -£1,880,000 Leeds £32,825,000 £39,800,000 -£6,975,000 - £1,395,000 Ipswich £4,218,500 £14,750,000 -£10,531,500 -£2,106,300 Brentford £19,630,000 £30,300,000 -£10,670,000 -£2,134,000 Forest £24,600,000 £49,050,000 -£24,450,000 £4,890,000 These aren't in order but it makes for interesting reading, for instance in the last 5 seasons Barnsley have apparently spent 9.4 million on players and sold others for 17.5 million. I am struggling to think of players we've paid for which total 9.4 million in that time, but according to this which comes from transfer league website we have a surplus of 8.1 million
Moncur, Lee, Thiam, Bradshaw, Winnall, Mallan, McDonald, Mawson that's nearly half of that amount there..
I also think Mcarthy & Mowatt can be added to that list as they both incurred fees plus Pinnock who I had forgot