Francesca Curran, the actress who plays Helen, had to actually shave her head for the role. In real life, she is completely opposite from her on-screen counterpart, being very feminine. She has to transform into Helen each day of the shooting, with cast members shaving her head, applying tattoos and making her up to look older.
But, as their clubs are too wise to do so, football think tank CIES Football Observatory had to find out scientifically which football players are the most valuable. They considered these factors to evaluate players from Premier League, La Liga, Bundesliga, Serie A, and Ligue 1:
Player performance: The quality and consistency of their form
Player performance in relation to their club: Are they the star player?
International status: How established are they for their country?
Contract: Players with longer deals are more expensive
Age: Younger players command higher fees
Position: Goal scorers are more expensive than goalkeepers.