Your not really mature before you pass 25 years at the very earliest, as the brain is still under development.
So yes he will mature, but I just seen similarities to what we seen with Cassano, Zaniolo etc. at a similar age. Hopefully he doesn’t follow the same path.
Talent is only one piece of the puzzle, a young player also need the right mentality, atitude and work ethic. I’m not writing specifically about him but in general, there reasons why such a small percentage make the cut, lot is simply down to this aspect. We are actually requiring something that goes a bit against nature and how we develop as individuals, it requires a very special attitude to become an athlete, with lots of sacrifices and not being able to do the sort of things other at that age do to the same extent. you have to commit yourself to it and work hard. How many of us could really do it in that age. So his attitude isn’t really so shocking, he is just a young man after all. The sort of professionalism required of these lads at that age doesn’t come naturally for all. The clubs need to put lots of effort into developing them both in terms of football skills and as well mentally, the latter is not something Italy in generally been good enough at. If you look at other leagues they nurse and work hard on developing this aspect, in Italy your far more left to your own mental strength, especially at Inter, something been reported by numerous young players throughout the years.