The Blues have spent €853 million in transfer fees on their current squad, even putting them ahead of big-spenders Paris Saint-Germain, who come in a close second at €850m.
The past off-season saw yet another massive outlay of cash by City, who spent €242m on players including Benjamin Mendy, Kyle Walker, Bernardo Silva, Ederson and Danilo.
PSG, of course, spent even more in the most recent close-season. The French side dropped a whopping €395m in the lead-up to 2017-18, including €222m on Neymar and €180m on Kylian Mbappe.
Manchester United come in third, with English sides making up six of the top 10 costliest squads.
TOP 10 MOST EXPENSIVE SIDES