Players whose value will increase post the World Cup

#2 Piotr Zielinski

Zielinski is a vital part of Poland's plans for the World Cup

The young Polish attacking midfielder has had a breakthrough season with Italian outfit Napoli. With seven goals and three assists this term, Zielinski has been a vital cog for Maurizio Sarri's team. Having started out as club captain Marek Hamsik's understudy, he stepped up in the second half of the season and was soon challenging for a spot in the main XI.

Gifted with a mix of good pace and superior dribbling abilities, Zielinski is a treat to watch with the ball at his feet. A passing accuracy of 85%+ isn't too bad either. An eye for the spectacular is the icing on the cake. With the decline of Kamil Grocisky and the disappearance of Bartosz Kapustka, the onus is on the 24-year-old to play second fiddle to Robert Lewandowski.

Valued at a relatively modest €25 million by transfermarkt.com, the Polish international could well be swept by a bigger club for a price crossing the €40 million barrier, provided he puts in a few game-changing performances in Russia.