#4 Borja Iglesias (RCD Espanyol)
Clause: £25 million
Espanyol enjoy quite a good season as they are only 2 points behind places that lead to the European competitions next season. One name that stands out on the team is Borja Iglesias, their centre-forward and best scorer.
The 25-year-old striker is taking the whole league by storm in his first ever La Liga season. He scored 9 goals in 18 appearances and also has 2 assists to his name. The best indicator of how crucial he is for his team is the fact that he has scored 7 of Espanyol's last 9 goals.
Borja came to Espanyol this summer from Celta Vigo. He has quickly established himself as club's most important player and if he continues in this style, he will quickly earn a transfer to one of Europe's best clubs. He will surely attract interest from many clubs mostly due to his very cheap release clause that stands for £25 million.