well 7 of my players have 6 stars and the rest have 5. But all my 5 star players have 24 overall so they will be 6 stared soon.
The player who train fastest is Vincent Kompany. He is 19 years old and valued to 2,14M
The player who train most slow is Xavi and he is also 19 and valued to 1,53M - but still he did 4 goals and 2 assist in that 8-1 win.