The only thing I wonder with Rafa is if they're simply bringing him in to be a patsy. A short-term hitman charged with getting rid of the deadwood and 'doing the best we can' this season, so that we can reset and have greater opportunities to reinforce (FFP perspective) next summer? Maybe it's a year we're kinda willing to write off and put in a safe enough pair of hands that we don't get relegated? Knowing there won't be any dismay at sacking him next summer and potentially better options then than there is right now?
Probably I'm giving them too much credit.