I still believe Busi has more to give at Barca. He needs to be managed better, that's all.
I highly doubt Valverde gives any useful orders to a player like Busi. It's probably "play like you always have", doesn't matter if he's in a 4-4-2 or who he plays with.
Valverde's Barca is like a Rubik's cube. The middle piece is unmovable on each side of the cube, these represent our seniors like Roberto, Piqué, Busi, Rakitic, Suárez, Messi.
The problem is, Valverde can't solve the cube. Maybe he gets one colour correct but the rest will always be in shambles.
"He has to be managed better" narrative can be used for anybody. The fact is, that his average production isn t worth the effort and he is only going to get worst each year.
De Jong can do his job better, while being faster and stronger. Busq should be degraded in to DJ sub.