A 9-0 victory in the first leg of a two-legged tie is the sort of result that might ordinarily have legal online betting sites thinking about closing the markets ahead of the second leg. But given that an in-form Manchester City side are more than capable of putting five or six past good Premier League opposition, there was nothing suspicious about them scoring nine against a League One side. But will Pep Guardiola’s side take their eye off the ball…