Forest isn't in their peak form and that's the advantage that Chelsea will use over them despite playing away from home. Chelsea needs all three points in this match to enable them qualify for UCL next season, any result apart from a win will put them in the Europa cup competition. However, Tottenham has already qualified to the Champions League and English team is given only five slots.
If this match had taken place when Notttinham Forest were in good form, they would have stood a better chance of winning the game, considering they are at home, but now they are not in very good form.
It will be an interesting match because there is not much difference between Forest and Chelsea, even though Chelsea is a little bit better. Losing that game will make things worse for Chelsea because that is their only chance of getting to the Champions League next season. Failing to win that game would be disastrous.
In my opinion, tomorrow's game is more important than the conference league final because nobody cares about a third-tier trophy for small teams.