I have hopes for Man United in this match and I think the match will end in favor of the visitors. Even though they experienced instability and in the Premier League, Nottingham Forest managed to beat Man United, this does not mean that in the FA competition they will allow them to lose again. Only this championship has a chance for Man United and I am sure Erik Ten Hak will try everything to get victory. The previous defeat when playing at Old Trafford was very surprising because Man Unied was in a positive trend.
Nottingham Forest is also not very consistent and even though the match will take place at their home ground the chances are still the same. If Man United does not try to chase champions in this competition, then this season Man United could lose all the opportunities that exist because chasing other competitions will no longer be possible for Man United.
If you have noticed Manchester United's odds for the win are increasing in time. It has reached 2.30 now. This must be because of having so many missing players before this game. There are even two more questionable players such as Bruno Fernandes and Varane. There is a long list of injuries at Manchester United side right now which is a really big problem.

Nottingham beat Manchester United by 2-1 home before and this game is also going to be played there. There were players like Fernandes, Wan-Bissaka and Varane playing back then who are likely to be out of the squad today. I won't place any bet on the Red Devils to win today as a result. It is likely to be very tough for them.