Passing is a skill no doubt: good passers being it, long or short, have precision in their passing. That still demands players to get into positions where they can receive that pass. It's also harder when you are facing teams which press high and give your passers less time on the ball and blocking passing lines. So, both are important: passing ability of players and teamwork/movement of the players.
I agree on both counts, but I think this actually shows why Fernandez is so poor.
I think Fernandez is a good passer in the sense that he has precision in his passing, and I also think his creativity is limited by Maresca's tactics. I don't think these are mutually exclusive issues but actually an interaction that makes everything worse. In a system that is not designed to give players creative options, because its structure requires set patterns of play and rigid roles for players, Fernandez is limited, nor is his precision in passing ability used to full effect.
I also think there are certain issues Fernandez has that make the problem worse. Firstly and foremost, he is energetic without being athletic, and he is increasingly becoming clumsy on the ball as well. It means that he is unable to break the press at PL level, nor does he have the quickness to create moments within a set defence, nor is he a particularly good finisher or aerial threat or off-the-ball runner that justifies him being used as a box threat. Fernandez's role seems to be to get the ball out wide or back to defenders and then run forward to be a body in the box. The team is crying out for a ball carrier through the centre, which is simply a role he cannot provide, and he is not good enough at any of the other duties that warrants his inclusion.
This is in stark contrast to players in other top teams that play the same role as a deep AM/attacking CM. Fabian Ruiz, Pedri, Tijani Reinjders, Szobozlai/MacAllister, Camavinga/Valverde can all pass, press and most crucially, carry the ball and cover ground at pace.
Were Fernandez inclined to continue to hone his craft in the deeper central role he initially starred in, I think he would be a valuable player, but he has no interest and neither Poch nor Maresca were willing to take a stand.
As for transfer interest, we're stuck with him. Real Madrid aren't actually interested, that is just internet nonsense peddled by people like me and
@Sconnie Blue in the vain hope that something happens. Fede Valverde is the exact midfielder that would improve Maresca's system, but his athleticism and finishing is just a level beyond Fernandez. Madrid will need a defensive midfielder soon, and they will turn their eyes to Caicedo, not Fernandez.