Real Madrid have spent more than any other LaLiga Santander side Transfer Market Mariano takes them above Barcelona

The 21.5 million euros spent by Real Madrid to bring Mariano Diaz back to the club makes Los Blancos LaLiga Santander's biggest spenders this summer, leapfrogging Barcelona to top the table.

In all, Spain's top tier sides have invested 870.12 million in their squads this summer, with Real Madrid accounting for 145.75 million of that.

Barcelona have spent more than anyone else after the European champions with their 125.9 million, before Valencia's 125 and Atletico Madrid's 123.5.

The most expensive investments

Vinicius Junior's arrival for 45 million is the most expensive at the Estadio Santiago Bernabeu this summer, with Thibaut Courtois' 35 million move in second ahead of Alvaro Odriozola's 30 million switch from Real Sociedad.

It has been a busy summer at the Camp Nou and the Catalans have recruited well. 41 million is the most they spent on a single player as they brought Malcom in from Bordeaux while Arthur and Arturo Vidal arrived for 31 and 18 million respectively.

Clement Lenglet's arrival was also costly as Barcelona splashed 35.9 million to bring him from Sevilla.

Goncalo Guedes' return was Los Che's costliest acquisition at 40 million. They invested 35 million into their defence with Mouctar Diakhaby, Jeison Murillo and Cristiano Piccini coming in, while Geoffrey Kondogbia and Daniel Wass also arrived.

Kevin Gameiro and Michy Batshuayi have also been recruited to strengthen the attack ahead of their return to the Champions League.

Diego Simeone's side have added brilliantly this summer and look to be serious title challengers. The 70 million spent on Thomas Lemar is their biggest expenditure, followed by Rodri's 20 million arrival from Valencia. Nikola Kalinic cost 14.5 from AC Milan.

Santiago Arias came in at the back for 11 million, while Antonio Adan was signed as backup for Jan Oblak.