Nottingham Forest is different now so I think what happened in the previous match will not be a reference for the next match.
Nottingham Forest will play at home against Man City and they have great ambitions to maintain their position in the Premier League standings this season so I think this will be a fierce match and personally I slightly favor Nottingham Forest to win the match but for betting options I think there are many possible options such as over goals or BTTS worth betting on.
I still remember that time, Manchester City was very bad, they had about 7 matches and they lost 6 and draw one, the 8th one was with Nottingham Forest and sadly they didn't allow them to be disgrace in at home, they made sure they had their revenge with them but immediately after that, the loss and draws continue, there wasn't any match that time they won except when they won Leicester City in their home and that was expected, more like two loses.
I don't know what will happen here seriously because Manchester City are trying to maintain there self at the top of standing, any slight mistake they will be remove because Chelsea is at the back looking for that same opportunity to finish the season atleast in the top too. Nottingham isn't too different from Manchester City, they are not consistent with their performance, if I'm to bet on them I think over 2.5 is okay and realistic.