Now, is this an ideal player for my ideal team?
No absolutely not, but you asked me a training plan with an average player, so it's hard to have an ideal player by the time he turns 21
What that being said, I believe this player could do a decent job, keep the ball circulation high, excellent for interior attacks and has decent levels in defense (for the start of the u21 season, he needs to improve them during the u21 season)