It’s not down to just the player is it? So carry on fantasizing
It sort of is in the modern game though mate. This is especially so when you consider that he has had (we are led to believe) quite severe mental health difficulties at Barcelona and looks extremely happy at Everton.
If he won't sign for another team, then you will be unable to sell him.
The other thing to factor in, clearly Barcelona use the loan system effectively to pre-emptively move lads on who they are unable to sell for the figure they want at that moment. For players in the squad, it must be difficult to be loaned out, to be loaned out, and then to not allow for a permanent transfer to be done, on the back of a gentleman agreement being made would hit morale amongst existing players.
I suspect both Everton and Barcelona have a figure in mind for the player. I'd imagine the figure is quite close. Everton seemed to develop a good working relationship with Barcelona in the summer (particularly via Brands) to complete these 3 deals and there will be good will on both sides to ensure the deal goes through, as both parties benefit from it. If there are more lads Barca want to offload, they will probably know Everton can be a valuable side to send them too to get them back into the shop window. Likewise, and in time if players do well here, I'd expect Barca to be able to complete deals quite quickly as a result (see Richarlinson).
I'd politely suggest the only one who seems to be living in a fantasy, outside the realities of negotiation is yourself. If Everton want the player, the deal will be done very easily.