Next year is incredibly important. He'll be shown a lot of patience, but if next season is a bad season for us, he'll be crucified by the idiot fans and the media. The pressure will get to him and swallow him up if this is the case IMO. On the other hand, if he manages to win the league next season or at least put in a competitive season on all fronts, all the doubts will disappear and he'll be able to properly begin his own long and hopefully fruitful Manchester United career.
I'm looking forward to a new era.