Beletti? He has worked as assistant manager for Cruzeiro, U20 manager for Sau Paolo, Juvenil A assistant in Barca, Barca Atletic assistant, before getting Juvenil A manager job.
It isn't a bad CV for U-19 manager. Many of those are usually inexperienced with some exceptions.
Real do that too, Raul, Guti, Alonso, Zidane, Solari etc. Atletico did it with Fernando Torres.
It is good for young players to see a coach who is a true professional who was there at the biggest stage as a player, good for the club as it shows players that we take care of them after retirement, give clubs glimpses of who could be the real deal future manager (Pep & Zidane are prime examples) and generally they are supported by experienced assistants and rarely interacts with prospects for long.