Seriously, I don't even know who this guy is, the way Chelsea are just signing players left, right and centre I really don't understand. Are they trying to have players that will fill an entire stadium! With the way they are signing players, one might just wake up one to check his mail and he will be surprised to see that Chelsea has signed him without his knowledge.
Facundo played a significant role when he was loaned to Leicester City. His name may be unfamiliar to us, but that's because he only played for mid-table teams. As far as I know, Chelsea didn't make a purchase, only a one-season loan option without a buy clause. I don't think it will be detrimental to Chelsea, besides, there are names like Marc Cucurella, Robert Sanchez, and Moises Caicedo who have had previous relationships with Facundo, so with that relationship, he should have no trouble adapting, and more importantly, he could be a good replacement for the squad.