#3 Ethan Ampadu
The 17 year-old was snapped up from League Two side Exeter City, and has already been given a chance in the Chelsea first-team. He has played two games for the Wales national team.
He is one of the brightest young talents in the top-flight at the moment and has a bright future in the game ahead of him. He made his debut for Exeter in the fourth tier when he was just 15 years-old, which shows how impressive he is. He went on to play 13 times for them before leaving to join Chelsea.
The fact that he is already getting plenty of game-time suggests that he is in their long-term plans. He is calm and composed on the ball and has the potential to be a key player for Chelsea in the future as he suits their style of play.