DonAK
President of FC Barcelona
What is Gavis best position in this Barca team?
I don't know, but he's not a starter either way since he cannot do what Pedri and Casado can do, nor what Bernal has the potential to do when he is back.
I suppose backup CAM of sorts depending on the opposition/situation? I do believe he would do better with a striker that makes runs in behind to free up some space for him tbf.
Don't really worry much about Gavi. Put him wherever depending on who is available, the opponent and situation/tactics.