I never for once expected Nottingham Forest to smell the top of the table and they did. Seeing your comment having confidence in them to the next Champions League after securing the fourth place, they can really do it but the problem is will they not do what teams do the most. It wouldn't make sense after all they have done this season and don't qualify for top 4, if they don't do that I'm very sure they can't come here even if they are given the opportunity.
They have their next Manchester United, a team that doesn't know what they are doing right now. If Nottingham is good and want the best place, they have to win Manchester United because they won their last few matches, even won Manchester City that are way more tough than Manchester United but if they failed to do that, they are reducing thier chances of finishing everything, they are the only team that people don't regard that are doing well now and it's going to be motivation for other teams that are struggling right now.
I am sure Nottingham let MU win the match. Nottingham want secure their position on champions league zone because it is still vulnerable to shift Chelsea, The City, and Newcastle. Their performance is good to hold that position, but, in the remaining 9 matches something could be happen to shift them on top premier league. We don't know which players are likely to get injured so that affect their performance. If the team are still complete, and Nuno Santos keep running his strategy like he did before, I am sure Nottingham position are still safe until finish. MU is not in good condition, They can take advantage of this opportunity to increase points, and secure on 3rd position.