My son's "journey"
- U7-8, "box to box" mid (playing 9v9)
- U9-10, right back (playing 9v9) < new coach
- U11-12, center back (playing 9v9) < new coach, he had a plan (we asked 'cos he was small for CB)
- U13, CDM (playing 11v11) < same coach, as planned
- U14-15, CAM < new coach picked him as CDM and played him as CAM (and was weirdly disappointed!)
- U16-18, 6, 7, 8, 10, 11 < new coach truly developed him (as he was undersized) but saw potential
- U19, plays 9 & 10 but can play anywhere from 6 forward; bullies CBs for fun (he grew up/across)
Mostly though he still loves playing and has loved it all, apart from the one coach anomaly who nearly put him off the game.
He's 9, tell him to have fun and learn. Maybe chat with the coach, he may have a plan, but you are just not in on it yet.