The thing is with Barca, as great and massive a club as they undoubtedly are, their finances mean they're not necessarily in a position to pick whoever they want as it is going to be tough job for anyone. High expectations yet with no budget and selling off their experienced stars just to make...
It's all dependent on Alonso. He is first choice for both Bayern and Liverpool and they're both going to push for him- RDZ may end up at whichever one Alonso turns down.
Don't rule out AC Milan in this either. There's every chance Pioli leaves them this summer in the Champions League places...