You've missed a fourth one - his actual performances, which is more important than his ability.It's a 3 point axis with Romero.
His ability, his availability, his contract
I think due to the latter two it leans towards him going.
I don't know if I'm ok with that tbh. Bit torn
There is no doubt he can put in a top class performance, but rest assured once he has he will back that up with a mediocre one at best. I like him, but he is unreliable in aspects ranging from availability to rashness to just all round defensive competence. I think he will be better suited in Spain where they have a higher tolerance for his antics, he would fit right in to a Simeone team and I'd enjoy watching it