The cost of Premier League success – how the top clubs compare
Chelsea have transfer balance deficit of €1.08 billion since the Premier League era began 23 years ago, more than four times the deficit of Arsenal.
An interactive illustration from Hippo Chart shows the cost of Premier League success with huge spending from the leading club's in England's top-flight.
Current Premier League champions Chelsea spent more than £85m in bringing Diego Costa, Cesc Fabregas, Filipe Luis and Loic Remy to Stamford Bridge last summer and that spending was justified when Jose Mourinho claimed yet another league title, the eight in his career.
Mourinho's side finished the season as champions for the fourth time in a decade, but the London side has been transformed since Russian billionaire Roman Abramovich purchased the club from Ken Bates in 2003.
This compares to 13-time Premier League champions Manchester United, who have a deficit of £500m. The Red Devils splashed the cash last summer to bolster their squad, most notably breaking the British transfer record to lure Angel Di Maria (£59m) from Real Madrid.
Manchester City, backed by the Abu Dhabi United Group, have a transfer balance loss of £689m (€973m, while three-time Premier League runners-up Liverpool have a loss of £390m (€550).
Few eyebrows will be raised with the confirmation that financially prudent Arsenal are the most economically efficient of the top clubs.
Arsene Wenger's side have a transfer balance loss of £183m (€258m), with three titles claimed under the Frenchman's stewardship in 1998, 2002 and 2004.