Hi,
Ofcourse Pep,Zidane,Carlo are the best in your list. They all represent an upgrade on the erstwhile coach who is a great coach too.

Pep is not about to leave City now,same with Ancelloti in his current job. Zidane has been said to be awaiting the France job.
Brazil will have to find a solution somewhere. It's quite a difficult task now to getting a fitting coach.

Cheers