#4 - Koke (£54 million)
Koke is easily the most underrated player on this list. A midfield package who is often away from th limelight because of the antics that are highlighted of Atletico Madrid.
The 25-year-old Spaniard is a brilliant passer of the ball and is very good at taking set-pieces too. He can play on either side of the midfield and cross the ball into the box with perfection.
Apart from those abilities, he also contributes a lot to the defense and is a very good tackler. He has a similar style of play as Marco Verratti according to some pundits and it won't be a surprise if Barcelona decide to replace Andreas Iniesta with Koke next summer.
Edited by Sripad