The signings of the summer

Updated 1244 GMT (2044 HKT) August 9, 2018
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Twenty days after Liverpool paid a world record fee for a goalkeeper, Chelsea eclipsed that mark by signing 23-year-old Kepa Arrizabalaga from Athletic Bilbao for $91 million. The fee is also a club record, surpassing the $75 million the London club spent on striker Alvaro Morata last summer. Juan Manuel Serrano Arce/Getty Images Europe/Getty Images
After nine years at Real Madrid, where he won two La Liga titles and the Champions League four times, Cristiano Ronaldo left Spain for Italy this summer in a $117 million deal to Juventus. MIGUEL MEDINA/AFP/AFP/Getty Images
You wait 17 years for a world record then two come along almost at once ... Gianluigi Buffon was the world's most expensive footballer for 17 years before Liverpool paid a then record $68 million for Brazil No.1 Alisson in July. Alisson's tenure as the world's priciest keeper was short lived however thanks to Chelsea's purchase of Kepa. Charles McQuillan/Getty Images Europe/Getty Images
Manchester United manager Jose Mourinho has predicted a "difficult season" for his team after a relatively quiet transfer window. But United have made one prominent purchase, bringing in Brazilian midfielder Fred for $60 million. CHRISTOF STACHE/AFP/AFP/Getty Images
Liverpool had to wait 12 months for a glimpse of Naby Keita in the famous red kit but, on pre-season form at least, the dynamic midfielder seems to have been worth the wait. Signed for a then club record $61 million in 2017, the deal for the Guinea international was not finalized until this summer as Liverpool had agreed the midfielder could play a further season at RB Leipzing. Nathan Stirk/Getty Images Europe/Getty Images
One of the most controversial transfers of the summer. Malcom seemed on course to join AS Roma from Bordeaux but the Italian club was gazumped by Barcelona as the La Liga side sealed a $49 million deal for the Brazilian. Roma said it was considering legal action. LLUIS GENE/AFP/AFP/Getty Images
Chilean midfielder Arturo Vidal joined Barca from Bayern Munich on a three-year deal for an undisclosed fee. "I've come here to bring a lot of energy on to the pitch. Joining Barca is a step up for me," said the 31-year-old. JOSEP LAGO/AFP/AFP/Getty Images
Thomas Lemar joined compatriots Antoine Griezmann and Lucas Hernandez at Atletico Madrid after the 22-year-old Frenchman agreed to join the Spanish club from Monaco for $67.8 million. "I'm very happy with the decision I made," said the winger. JAVIER SORIANO/AFP/AFP/Getty Images
Justin Kluivert signed a long-term deal with AS Roma worth an initial $19.5 million. The 19-year-old Dutch winger left Ajax Amsterdam for a five-year contract lasting until June 30, 2023. Paolo Bruno/Getty Images Europe/Getty Images
Riyad Mahrez moved from the 2016 English Premier League champions Leicester City to the reigning title holders when he joined Manchester City on a five-year deal for $77 million. IAN KINGTON/AFP/AFP/Getty Images
Croatian midfielder Mateo Kovacic, 24, has joined Chelsea on a one-year loan deal from Real Madrid. "It is a privilege and an amazing feeling to be part of this club and I can't wait to start with trainings and matches," tweeted Kovacic. Matthias Hangst/Getty Images Europe/Getty Images
After four years and two Premier League titles with Chelsea, Belgian keeper Thibaut Courtois is off to Real Madrid on a six-year contract. Here he stands with Real Madrid president Florentino Perez during his presentation. JAVIER SORIANO/AFP/AFP/Getty Images