Can you explain why Mazzarri is the best option?
Honestly, I don't find a reason why Mazzarri is the best one. I think Mazzarri is only an alternative coach.
Probably because no one else was ok with a contract for only 6 months with the risk of being sacked after 1 month.
Mazzarri if will fails next month, he will be sacked before Xmas.