8. Abel Hernandez (Palermo to Hull City, £10m)
Abel Hernandez has an excellent goalscoring record in Serie B, the second tier of Italian football. He scored 14 goals in 28 league matches last term.
However, he has managed just 17 strikes in 83 matches in Serie A, and his top flight football pedigree does not make him worthy of a £10 million fee. Still, that’s what Hull City paid.