Nottingham forest are currently in the 7th position in the Premier league table, they are not too far from getting into the top 5 but I honestly do not think they can achieve it, Chelsea will do everything they can to either remain in their current position or climb higher, so like you said, it's going to be a very tough match, but I personally see chelsea beating Nottingham forest.
And away from that, let me use to medium to also congratulate Arsenal for beating Newcastle yesterday by 1 goal, this turned out to be a tiny space for escape for Arsenal, I never expected them to win that game but behold, they won, I hope they will fight harder to ensure they win all the coming games from now on, so they could keep maintaining their 2nd position in the league table until this season is over and done with.
Nottingham Forest have put themselves in this position, and now they have only one match left. Even a win in the final round might not be enough to lift them into the top five. Tomorrow, City will play against Bournemouth, and if they win, they can move up to third place. But I think the position doesn't matter as much right now they’ll be playing Bournemouth, and I expect it to be a tough match, but they need to beat Bournemouth and secure a spot in the Champions League.