Dembele will see action on Sunday against Levante.
"Everyone in my squad has the possibility of starting but I've already said we need to be careful with Dembele, he must get involved in the team's dynamics again," said Valverde.
"What the fans want, apart from good players, is to see their team win and play well. That's all.
"Coutinho is a great player, just like there are many other great players but what I like to value is who I have, not who I don't have.
"It doesn't mean we don't value the other great players in the world but we also have great players here."