Barcelona have been the major success story in European football for the last decade or so.
Led by the sublime brilliance of Lionel Messi, the Catalan giants have helped themselves to four Champions League titles since 2006, while they have dominated domestically, winning four of the last five La Liga titles ahead of arch rivals Real Madrid.
Despite their famous La Masia academy continuing to produce quality young players, Barcelona have splashed the cash in recent seasons.
Big money signings like Philippe Coutinho, Ousmane Dembele, and Antoine Griezmann have all arrived for mammoth sums as 'Barca' look to continue their dominance.
Of those three players, Coutinho and Dembele have both struggled, with the Brazilian already moving on to Bayern Munich after failing to rediscover his best form at the Nou Camp.
This pattern of big names failing to achieve success in Barcelona isn't a pattern the club should be unfamiliar with, however. Over the years we have seen countless players arrive in Catalunia and simply not live up to expectation, or in more simple terms, flop.
It seems Barcelona can't always get it right in the transfer market, as the names on this list demonstrate.