10) Bastian Schweinsteiger (€9m from Bayern Munich, 2015). Arriving at Manchester United a year after starring for Germany in their World Cup triumph, Schweinsteiger turned up at Old Trafford amid much fanfare, even if supporters knew his best days were behind him. One of the best box-to-box midfielders of his generation, Schweinsteiger no longer had the legs to dominate games and was demoted to the under-23s following the appointment of Jose Mourinho. Always a popular figure among the fans and his fellow players and his transfer fee was not large, but given his standing in the game, this was not a successful transfer. Getty

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