Perhaps it was the injustice of the VAR intervention that led to Mikel Oyarzabal putting Real Sociedad from the penalty spot. Or perhaps it was the effect of this week's announcement that this famous arena’s days are indeed numbered. Perhaps it was a combination of both. But for whatever reason, there seemed to be an extra edge to the atmosphere inside a condemned Old Trafford. Yes, the reasons why Sir Jim Ratcliffe and his task force want to build a new £2billion stadium are well-documented