Some players aren't good fits but when you have a coach like Valverde it makes it hard for players to fit in and improve.
He cannot handle nor develop complex talents. It's really easy to work with guys who have experience and know what they are doing and are/were considered some of the best in their positions but when it comes to actually develop talent that's the hard part.
We brought in a number of young talents such as Dembele, Malcom, FDJ, Arthur, Todibo, Lenglet, Wague(Technically bought for the B team but promoted) Firpo, Alena(Promoted) While Firpo and Wague have been with the first team for a short time so not much we can say about them.
From what we have seen so far, the more complex the talent and some with some complex issues that would take time to fix with good coaching Valverde have done very little in helping them. One of the biggest failures in his reign without a doubt has to be Semedo.
Semedo came here with the reputation as one of the best younger RB's out there at the time. But he had his own flaws, but what did Valverde has done since he got here to help fix and limit some of his flaws? Absolutely fucking nothing.
Valverde is one of the laziest and stupidest coaches we have ever had in this regard. His idea of development is just subbing him off at HT and bring on Bob because he has "Experience in the system" He has done nothing to fucking fix Semedo's flaws and did the musical chairs bullshit because he's fucking stupid and a lazy mother fucker.
Dembele? loses balls out the ass, and his passing is still shit and has some unprofessional issues? Nah, let us sit on our lazy ass and let it continue, no need to step in when Dembele is being unprofessional! that's the clubs job, not mine even though I'm the manager and it's my responsibility to help cut this shit out.
Arthur? Came out pretty strong out the gate, a bit too conservative at times but to be fair the system was not great but sadly suffered some niggling muscle injuries in the 2nd half of the season which led to a drop of form but oh he gets benched so he can play Vidal despite how much worse Busi and Rakitic have been which led us to eventually get blown the fuck out by Liverpool at Anfield.
Todibo? Sure he's only 19 but has looked better than Umtiti has but again ends up being 4th Choice because "MAH EXPERIENCE" even though Umtiti is likely to cost us fucking points due to how poor he is now after his injuries.
Malcom? He was great in France and seemed to be more polished compared to Dembele, gets sent to the dog house instantly because he wasn't Willian, never got much of a chance to get a run consecutive games to build upon form and despite having that great Classico the guy gets benched and wasn't featured for nearly a month after that.
Lenglet? the only reason he even got the chance to cement himself was due to the fact Umtiti got injured. Pique was in pretty dreadful form as well but never got benched. The only chance Lenglet got to play before what happened to Umtiti was vs Girona and got sent off that game.
Many can argue that some guys we got are bad fits and weren't as talented as we thought, but it doesn't fully excuse the fact that Valverde is flat out not good enough to deal with complex talents who have some flaws that require actual work to improve on.
The man just cuts corners on everything, he just uses Messi and some of the other guys to do the hard work for him while doing little to help develop talents we brought in for him.