If a young player gets a "red glowing form arrow," start them. Exceptional match performances boost development point gains.

: At age 19, Messi boasts some of the highest dribbling speed and top speed growth curves in PES 6. Move him from the wing to an Attacking Midfielder (AMF) role to completely dictate games.

A "menace" in the making; he is relatively cheap at the start but develops elite finishing. Park Chu-Young

: Already a superstar at the start of the game, Rooney is only 20 years old. He possesses maximum aggression, high shot power, and elite balance, making him nearly impossible to dispossess.

One of the best young CBs in the game, outperforming even legends like Rio Ferdinand in terms of his long-term growth curve.

These players are essential signings due to their high ceiling and immediate impact:

: A powerhouse defender available in the default youth academy who grows into an absolute wall.

: Starts with incredible dribbling capabilities. His curve stays high for over a decade, making him a mandatory signing.

High versatility; can develop into an elite defender or defensive midfielder. Jérémy Mathieu

(FC Seoul): Widely considered a "must-buy" for his versatility and rapid improvement. Vincent Kompany

By identifying and developing these young players, teams can build a strong and competitive squad that can succeed in the PES 6 Master League. Good luck with your Master League campaign!