Wague is so far above Segunda B level, that is for sure.
Mind you, a few of the B team players are. I think that we can afford to loan him to an offensive LaLiga side next season and stick with Semedo/Roberto. As I mentioned in another thread, last season Digne was the worst of our fullback quartet but look how good he is at a lesser team. With that in mind, the duo of Roberto/Semedo is better than 95% of fullbacks out there.
I actually prefer Mateu Morey but with injuries and contract negotiations being difficult every summer I can see him not having a future here. As weird as it sounds he reminds me of a young Toni Kroos. For those of you who didn't watch Kroos at 15/16, he was playing in midfield but was nonstop running and dribbling with the ball, making challenges. Very different to the player he matured to become, but similar to the way Morey plays at rightback.