Apparently anything can happen in the FA Cup. With due respect to Sheffield United, who played extremely well and deserved a replay, nothing happened here until Memphis Depay won a penalty in stoppage time to allow Wayne Rooney to spare the home side’s blushes. To say the result was an injustice would be to risk the understatement of 2016. Rooney put away the penalty confidently enough after Dean Hammond had fouled Depay, but before the ball was placed on the spot the Premier League side seemed to be having difficulty working out where the goal was.