As far as I know, when I signed a 14 token player from Youth Academy and became "active" in my squad, I could see exactly the same details that you can see for any other player in your squad. I don't know if I answered your question but even if it's coming close to the end of the season the player looks like a good investment if you owe a good amount of tokens and you'll be able to invest a bit in his personal trainer as well.