Transfer prices have been getting higher and higher since Luis Figo broke the world record when he moved to Real Madrid from Barcelona for €62 million in 2000.
Since then the transfer record has been broken on six occasions but 39 other transfers have officially been worth more than the deal for the Portuguese forward.
High transfer prices have increased throughout and football, through television deals and rich owners, has only got wealthier, so it's no surprise to see 15 clubs have spent over €1 billion in the past 20 years.
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According to Transfermarkt, Chelsea are the biggest spenders since the turn of the century and the top four have all spent over €2 billion in that time.
25 - ASTON VILLA - 375 TRANSFERS - €696.94 million
24 - SEVILLA FC - 305 TRANSFERS - €716.78m
23 - WEST HAM UNITED - 427 TRANSFERS - €736.95m
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22 - OLYMPIQUE LYON - 193 TRANSFERS - €746.54m
21 - NEWCASTLE UNITED - 339 TRANSFERS - €767.02m
20 - BORUSSIA DORTMUND - 189 TRANSFERS - €829.03m
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19 - VALENCIA CF - 312 TRANSFERS - €866.91m
18 - EVERTON FC - 302 TRANSFERS - €877.31m
17 - SSC NAPOLI - 585 TRANSFERS - €910.70m
16 - BAYERN MUNICH - 129 TRANSFERS - €995.69m
15 - AS MONACO - 420 TRANSFERS - €1.03 Billion
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14 - ARSENAL - 317 TRANSFERS - €1.13bn
13 - AS ROMA - 665 TRANSFERS - €1.23bn
12 - TOTTENHAM HOTSPUR - 407 TRANSFERS - €1.25bn
11 - AC MILAN - 639 TRANSFERS - €1.32bn
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10 - ATLÉTICO MADRID - 331 TRANSFERS - €1.35bn
9 - LIVERPOOL FC - 369 TRANSFERS - €1.48bn
8 - PARIS SAINT-GERMAIN - 266 TRANSFERS - €1.55bn
7 - INTER MILAN - 790 TRANSFERS - €1.58bn
6 - MANCHESTER UNITED - 316 TRANSFERS - €1.78bn
5 - JUVENTUS FC - 761 TRANSFERS - €1.90bn
4 - MANCHESTER CITY - 409 TRANSFERS - €2.05bn
3 - FC BARCELONA - 195 TRANSFERS - €2.06bn
2 - REAL MADRID - 201 TRANSFERS - €2.14bn
1 - CHELSEA FC - 471 TRANSFERS - €2.16bn
Before 2003 Chelsea weren't a big spending club but they were the first side to really have a huge cash injection from a new wealthy owner, when Roman Abramovich took over.
The money has served them well as they've won five Premier League titles, five FA Cup, three League Cups, the Europa League and the Champions League in that time.
Money doesn't always buy you success, but sometimes it does.
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