In my opinion, Nottingham Forest will have a hard time against Manchester City because Manchester City will focus on the Premier League after being eliminated from the Champions League. Although Nottingham seems to be performing well, I think they will lose in the Manchester match this year. If Nottingham Forest gets 3 points, this will become a problem for Manchester City.
If you look at the statistics, Manchester City is superior to Nottingham Forest even though they are currently one point ahead of Man City, especially after Manchester City was eliminated from the Champions League, their focus is only on domestic competitions such as the EPL and FA. So even though Nottingham Forest is currently in good condition, it is not easy to fight Man City who want to immediately rise from the slump.
However, Man City after successfully advancing to the FA Cup quarter-finals, they had to pay dearly for the victory because they also lost one more player due to injury after playing against Plymouth Argyle and the injury of defender Nathan Ake added to the list of Man City players who were injured this season. But in my opinion even though Man City has many injured players, this match will still be won by Man City because Pep Guardiola certainly wants to continue winning so that his players can regain their confidence after failing in the Champions League and want to stay in the top four of the EPL league.