Market value: £280m
Andre Villas-Boas' summer of spending appeared to herald a new era at White Hart Lane as the Portuguese broke Tottenham's transfer record three times with the acquisitions of Paulinho, Roberto Soldado and Erik Lamela.
These three players cost a total of £75 million between them, but Villas-Boas' inability to exact the best out of them cost him his job only 16 matches into the Premier League season.
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