imagine this scenario, the difference between carlo and (regrettably) someone like klopp, is that 2-3 years ago, if he has a choice of picking Seamus or Trent at right back, Carlo would have gone with seamus all day long. Klopp shows confidence in trent, sees the potential, allows for the fact that he will make a few mistakes here and there but sees how good going forward he is. Puts him in the team more often than not, and today you have a right back looking an England regular for the foreseeable and your first choice right back for your club.
Substitute Trent with nkoukou. Not saying he's as good as digne, but if you want young players to develop, you need to give them opportunities and game time, in big games. With Digne out, it's the perfect opportunity to do this with nkoukou, but no, delph has the experience and is picked out of position despite being the slowest player in the league (including keepers from every club in the league) and being absolutely gash on the ball. This type of conservative (cowardly) mindset won't work in this league. Other clubs allow young good players to get experience, Carlo looks reluctant in this regard and it's worrying.