Fernando Torres (£50 million/$85 million, Liverpool to Chelsea, 2011)
Roman Abramovich broke the British transfer record by signing Torres, but that is the only thing the Spaniard's three years in London will be remembered for so far. The striker has been largely considered a flop for Chelsea, scoring 46 goals in his first 172 appearances.
AFP/Getty ImagesCARL DE SOUZA
Radamel Falcao (£51 million/$87 million, Atletico Madrid to Monaco, 2013)
Falcao completed his big-money move after scoring 32 goals for Atletico Madrid the previous season. His first year in France was blighted by injury, with anterior cruciate ligament damage suffered in January ruling him out of the rest of the campaign and the summer's World Cup.
Kevin De Bruyne (£54 million / $82 million, Wolfsburg to Manchester City, 2015)
De Bruyne returns to the Premier League after becoming a revelation with Wolfsburg following his disappointing spell at Chelsea. The Belgium maestro, who was named Germany's Footballer of the Year last season, scored 10 times and added 20 assists to his impressive résumé.
Bongarts/Getty ImagesMika Volkmann
Edinson Cavani (£55 million/$94 million, Napoli to PSG, 2013)
Cavani moved to PSG after scoring 78 goals in three seasons at Napoli. The 27-year-old striker has not fully replicated his form for the French champions, but still managed 22 goals in 39 appearances during the 2013 season.
AFP/Getty ImagesTHOMAS SAMSON
Kaka (£56 million/$100 million, AC Milan to Real Madrid, 2009)
Kaka's move to Madrid made him the world's most expensive player. That Ronaldo surpassed that fee just weeks later effectively summed up Kaka's time in Spain, with the Brazilian overshadowed by Ronaldo in every respect. He managed 28 goals in 110 appearances and can now be found playing for Orlando City.
AFP/Getty ImagesJAVIER SORIANO
Angel Di Maria (£59.7 million/$95.9 million, Real Madrid to Manchester United, 2014)
Manchester United signed the Argentina international from Real Madrid for a fee of £59.7m, a record for a fee paid by a British club. Di Maria left Real after four years with the club and lots of success. His arrival is part of the Red Devils' rebuilding process since Sir Alex Ferguson's retirement.
Man Utd via Getty ImagesMatthew Peters
James Rodriguez (£63 million/$107 million, Monaco to Real Madrid, 2014)
The undoubted star of the 2014 FIFA World Cup, Rodriguez completed his transfer to the Champions League winners one year after moving to Monaco. Los Blancos will be hoping that the Colombian replicates the form he showed this summer on a regular basis.
AFP/Getty ImagesPIERRE-PHILIPPE MARCOU
Luis Suarez (£75 million/$128 million, Liverpool to Barcelona, 2014)
The controversial striker completed his 'dream' move to Spain in July 2014 after his 31 goals the season prior almost brought Liverpool their first title in 24 years. His appetite for biting people, though, means he won't be seen in a Barcelona shirt until late October, thanks to a four-month ban.
Getty ImagesDavid Ramos
Cristiano Ronaldo (£80 million/$136 million, Manchester United to Real Madrid, 2009)
Ronaldo's first five seasons at Madrid have been nothing other than a success. As well as guiding his team to 'La Decima,' in five years the Portuguese star scored 223 goals in just 208 appearances.
Getty ImagesJean Catuffe
Gareth Bale (£86 million/$147 million, Tottenham to Real Madrid, 2013)
The Welshman became the world's most expensive player in summer 2013 with his move to Madrid. Despite a slow start, thanks to a preseason injury, Bale went on to score 22 goals in 40 appearances in his first season, with 16 assists.