I think this time sakuraba has the best chance. Technically he's already gifted, he's overcoming his weaknesses, and his off the ball play is getting better. All he needs to do is do his thing unless the squad demands him to join defense.
Ryuu needs a certain playstyle to cope and influence the game. That's always been his biggest obstacle, and pro club players' egos are nothing to scoff at. After busou, and Japan youth, this may be the toughest one yet. He might choke but the scout might have his back due to his insane potential. Could be interesting if scout san resembled ryuu in the past but didnt make it big.
Lenon.. Idk, he's great and a role model. But his confidence flag is raising every now and then. I hope he gets something out of this.