The La Liga giants have wasted no time in luring big names to the club this summer and already stand as the biggest spenders ever in a window
Getty Images10AC Milan | 2017Transfer money spent: €192 million (£172m/$215m)AdvertisementGetty9Manchester United | 2014
Transfer money spent: €195 million (£174m/$219m)
Getty8Chelsea | 2017
Transfer money spent: €206 million (£183m/$231m)
Getty Images7Manchester City | 2015
Transfer money spent: €208 million (£185m/$233m)