They say you have to speculate to accumulate, but things don't always work out that smoothly.
According to the European Football Index, however, Sheffield United are doing pretty well.
After spending over £120 million on players, Chris Wilder has increased the value of his Blades squad significantly during his time in charge.
Click and scroll through to see the full set of figures, and how he compares to his Premier League rivals:
After spending over £120 million on players, Chris Wilder has increased the value of his Blades squad significantly during his time in charge.
17. David Moyes - West Ham
Starting Squad Value: £336,375,000 Current Squad Value: £255,920,000 Players Signed: £51,390,000 Players Sold: £20,520,000 Effective Profit: -£111,325,000 (Photo by Julian Finney/Getty Images) Photo: Julian Finney
18. Mikel Arteta - Arsenal
Starting Squad Value: £633,366,040 Current Squad Value: £562,460,000 Players Signed: £84,600,000 Players Sold: £16,790,000 Effective Profit: -£138,716,040 (Photo by Molly Darlington - Pool/Getty Images) Photo: Pool
19. Pep Guardiola - Manchester City
Starting Squad Value: £593,279,370 Current Squad Value: £944,460,000 Players Signed: £832,420,000 Players Sold: £283,470,000 Effective Profit: -£197,769,370 (Photo by Milos Bicanski/Getty Images) Photo: Milos Bicanski
20. Jose Mourinho - Tottenham Hotspur
Starting Squad Value: £807,750,000 Current Squad Value: £680,450,000 Players Signed: £130,500,000 Players Sold: £28,970,000 Effective Profit: -£228,970,000 (Photo Neil Hall - by Pool/Getty Images) Photo: Pool