In defence of JM I have to say that his belief in luck and how it plays out is consistent.
He gets his team to park the bus effectively surrendering possession because that is an area of competition he will lose convincingly. As such he keeps the score against as low as possible. He then relies on luck to eventually get the ball and hope his forwards can chase the ball then be lucky enough to beat our defence then actually be lucky enough to score from those limited opportunities.
Regarding defence he relies on a mixture of defensive skills to hopefully limit scoring opportunities and then relies on a good goalkeeper to stop shots that penetrate his system. All these rely on luck.
As demonstrated against Arsenal he also accepts that because he allows so many shots on goal he has to be lucky with those shots rather than use it as a strategic plan. Previously City have been guilty of having many shots but very few on target so last seasons draw demonstrated his reliance on that luck. He also thinks that he has a right to have ref decisions always go his United´s way.
Can anyone blame him even it it were true that he can quote one instance in the game that deprived him of a penalty as being the result of luck for City.
He shows his true colours in relying on luck being solely for him.
Regarding a manager who believes so much in luck rather than tactical superiority he should be thankful that his employers believed otherwise when he signed his contract with them.