In Italy they say it rains on the wet and so it has been for Walter Mazzarri. Among the excuses he gave for Sunday’s 2-2 draw with Verona at San Siro was the heavens opening and a sudden downpour. It brought derision. He was a wally without a brolly. Today’s announcement of his dismissal doesn’t entirely come as a surprise at least apart from to Mazzarri who up until now has never been sacked in his career.   Inter have at times played unwatchable football under his tenure. Their 2-0 defeat away to then bottom of the table Parma, a team that had lost their last six games in a row, being a case in point. His tactics were unsuited to a big club.…