5 current squads with the biggest market value increase 

#2 Atletico Madrid - €513.35 market value differential

Atletico Madrid have flourished under Diego Simeone

Squad Purchases: €305.65 million

Squad Value: €819 million

Difference: €513.35 million

It says a lot that Atletico Madrid has both the lowest squad purchases and lowest squad value on this list. Los Colchoneros have done incredibly well under the leadership of Diego Simeone over the past few seasons and there is no doubt they only feature on this list because of the Argentine manager.

Of their five most valuable current players - 2 are products of the youth system, 2 have increased in value by a combined €144 million since joining the club, and one has just arrived at the club as their record transfer. The recent arrival of Thomas Lemar means he is currently worth the €70 million Atletico paid for him, but at only 22 years old it is incredibly likely he will increase in value in the near future.

The differential between purchases and squad value is also likely to increase in the near future due to the youthfulness of the current squad. Atletico currently boasts nine players under the age of 25 valued at more than €20 million. This leaves a huge scope for market value increases and a possibility of Los Colchoneros topping this list soon.