There is always plenty of hype when a teenager makes his breakthrough at senior level.
With the Premier League being the most watched division in the world, the attention is even greater, and there are plenty of debates online about whether the latest debutant is the new Messi, Neymar or Ronaldo.
The CIES Football Observatory have been taking a more scientific approach, using a statistical model to value every player under the age of 20 across Europe.
Press the next page as we count down the most valuable teenagers in the Premier League.