World Cup 2018: 5 players whose value has significantly increased 

#2 Isco (Spain)

Isco is proving to be Spain's hero at the World Cup

Isco is one of Spain's star performers in the World Cup thus far. He has clearly demonstrated during the group stage that when granted the freedom to play his game, he can single-handledly create goalscoring opportunities and make attacks happen at will.

Although Cristiano Ronaldo stole the headlines in Spain's 3-3 draw against Portugal on matchday one, Isco was easily the best player on the pitch. He also played an important role in the 1-0 win against Iran and scored a crucial goal during their 2-2 draw against Morocco.

The Real Madrid midfielder, 26, only started 21 La Liga matches last season and could feel inclined to make a move away from the Bernabeú this summer. His stock is constantly on the rise and given his impressive World Cup displays, he's doing his reputation no harm either.

Every top club across Europe would love to have a player of his calibre in their ranks, though he will not come cheap.