15 Year old Keeper - 265 on STF with poor trainer!

Link - https://www.virtualmanager.com/players/16353689-danny-boehn

Trained at 139, 133 and 265 on STF so far! Trainer used only has 17 for keeper training which is not ideal.

Any idea on value?

I think he might be very good after seeing 265 on standard training facility in his latest training session!