The Roman Abramovich era has brought vast amounts of success to Stamford Bridge - five Premier League titles, five FA Cups, two Europa Leagues and a Champions League trophy sit among other honours.
Since the Russian's takeover of Chelsea in 2003, he has never been shy of splashing his cash on some of the biggest names in football to create some of the best and most successful teams in the game.
Big money signings have brought silverware and, while rival fans may not-so-affectionately refer to them as 'Chelski', the Blues have regularly been able to sit in front of their bright trophy cabinet and have the last laugh.
The club's 30 most expensive signings have all unsurprisingly come under Abramovich's reign - but, who are they?
30. Nemanja Matic - £21m
The Serbian was brought back to Stamford Bridge for his second spell at at the club for £21m, £19.5m more than what they paid for him first time round.
29. Juan Cuadrado - £23.3m
The Columbian didn't exactly light up Stamford Bridge as was anticipated, but he did manage a Premier League and League Cup double in 2015.
28. Juan Mata - £23.5m
Arrived at the Bridge in August 2011 and in his first season went on to win the Champions League and FA Cup, followed by the Europa League in his second.
A memorable player for Chelsea fans.
27. Marcos Alonso - £24m
Despite not being a significant member of the Chelsea squad at the moment, the Spaniard was influential at left wing back for during the title winning season under Antonio Conte in 2016/17.
26. Didier Drogba - £24m
? Which Champions League moment will you never forget?
— UEFA Champions League (@ChampionsLeague) January 20, 2021
1⃣ Jerzy Dudek, 2005
2⃣ Didier Drogba, 2012
3⃣ Edwin van der Sar, 2008
4⃣ Oliver Kahn, 2001#UCL
Prolific, iconic, legendary.
Didier Drogba affirmed himself as a Chelsea great over his two spells with the Blues with164 goals in 381 games and the above penalty (slide two) to secure the Champions League trophy in 2012.
25. Michael Essien - £24.4m
Good lord this was magnificentpic.twitter.com/1O9ILe7Xpp
— Adam Hurrey (@FootballCliches) September 27, 2016
The Ghanaian was another fan favourite at Stamford Bridge, scoring some quite unbelievable goals during his nine year stay - including this famous strike against Arsenal.
24. Davide Zappacosta - £24.5m
Not exactly the most memorable of players for Chelsea, but the Italian did make 52 appearances for the Blues, winning an FA Cup and Europa League along the way.
23. Oscar - £25m
The one-time wonderkid signed for Chelsea in 2011 and failed to reach the great heights expected of him before leaving for China for £60m in 2017.
22. David Luiz - £25m
Chelsea paid Benfica a reported £25m to bring the Brazilian to London in 2011, for his first spell at the Bridge.
21. Cesc Fabregas - £27m
Arsenal fans may remember this one.
The Spaniard proved to be every bit as good as he was in his Gunners days when he returned to England with Chelsea, helping the Blues to the Premier League title in his first season with a whopping 19 assists along the way.
20. Antonio Rudiger - £29m
The German cost the club just under £30m from Roma and has since gone on to play 124 times for the club.
19. Willian - £30m
The only player to score a Premier League goal in every calendar month - a bit of trivia well worth the £30m fee paid in 2013.
18. Andriy Shevchenko - £30.8m
22 goals in 77 appearances wasn't as good as Blues fans might have expected from the 2004 Ballon d'Or recipient.
He never managed more than five goals in a single Premier League season.
17. N'Golo Kante - £32m
The fee paid for N'Golo Kante seems an absolute bargain for a player of his quality.
The Frenchman has helped Chelsea to league, FA Cup, League Cup and Europa League titles so far.
16. Eden Hazard - £32m
The Belgian arrived in 2012 and was consistently Chelsea's main man - with 202 goal contributions in 352 games - before leaving for Real Madrid in 2019.
15. Diego Costa - £32m
A little bit crazy, often unpredictable, and always fun to watch.
The Spaniard excited the Bridge for three seasons, scoring 58 goals during his time at the club.
14. Michy Batshuayi - £33.2m
The Belgian did manage 25 goals in 77 at Chelsea but never really fulfilled his potential at the club.
Although he did score the goal that won them their fifth Premier League title in 2017.
13. David Luiz - £34m
The Brazilian returned to Chelsea from PSG for £34m in 2016, before saying farewell again in 2019 as he made the move to Arsenal.
12. Danny Drinkwater - £35m
Well, this is shocking.
After helping Leicester to the league title, the Englishman made the switch to the Bridge but has endured a woeful time there. His most memorable contribution has arguably been a red card for kicking out at a 16-year-old in a reserve game - oh, Danny boy.
11. Hakim Ziyech - £35.3m
The big one.
The 21-year-old had 77 goal contributions in 150 appearances for Bayer Leverkusen before he switched to Chelsea in the summer - it seemed like money well spent.
However, the club's record singing has been hugely disappointing to date, but fans will be hoping new manager Tuchel gets every penny's worth out of him.
Source : 90min