One of the biggest frustrations about Manchester United’s season is the way Mason Mount’s first season has gone. Manchester United signed a new number seven in the summer, and the club are still waiting for him to have an impact. It’s not really his fault either. Mason Mount has been out of action for the past four months with injury, and this is his second spell out injured this season. Long-term, the Mount move may work out. Right now, for this season, the £55 million spent to acquire him would have been more useful elsewhere, quite clearly. Mason Mount’s season so farMason Mount has made 12…