5 Most Astute La Liga Summer Transfer Signings (So Far)

Unlike the rest of the aforementioned deals, Castillejo's Villarreal move was not one that arrived on the cheap on the face of it. At a reported fee in the region of 10-12 million euros for the 20-year-old winger, it could be viewed as a gamble. But for those who looked on and admired Castillejo's emergence last season, it's conversely seen as anything but.

From making his debut for hometown club Málaga at the start of the previous season, 'Casti' ended the campaign as an unlikely key figure in Javi Gracia's side, and his explosion had given La Rosaleda a real reason to believe in a bright future. Yet within weeks of the season's end and just one campaign into a professional career with his local side, the young prodigy was sold to competitors Villarreal along with fellow winger Samuel García. Needless to say, it didn't go down well on the south coast.

So not only have Villarreal sabotaged one of their closest rivals, they've managed to find themselves an upgrade on left winger Denis Cheryshev, as well as one who is much younger and possesses the projection of a player who can one day be worth much more than the price the Yellow Submarine have recently paid for him. All things considered, Castillejo must surely be the buy of the summer as it stands.