Nottingham Forest should take all 3 points in this game considering that they are playing against an inconsistent team with an underwhelming performance this season. Even the win probability is on the side of Forest. I think the risk is on the away side Manchester United than it's is for the home team. Forest will either draw than losing in this match tonight.
Nottingham forest performance is just better than Manchester United, I know the match won’t be a easy one for the two teams, but I don’t think Manchester United is having any chances of getting a win in the match, they are really inconsistent, and they have nothing fighting for in the premier league, they have nothing to achieve this season. Nottingham forest are currently fighting to end the season in top 4, they are trying to qualify for the champions league next season, so I don’t really think Nottingham forest will be joking with any of their matches left, they will want to get a win against Manchester United today.
Just like you rightly said, Manchester United are already one goal down and it is likely that they will concede more goals. Their pattern of play is not too encouraging as it is looking like they knew that they will lose the match hence no need of subjecting themselves to any form of stress. I think tonight is yet another big test for Ruben Amorim and if he fails to remedy this match, the excitement of their Europa League win will be eroded and their optimism regarding the Europa League will fade. They still have enough time to come back into the game and possibly win it.