Actually, Bournemouth and Chelsea's performances are almost balanced so I think maybe they will get a draw but this match will be held at Chelsea's home ground so I think Chelsea will play as hard as possible in front of their supporters, if I myself am still quite sure Chelsea can still perform well in the EPL their poor performances lately will be used as evaluation material by the coach I predict Chelsea's victory and the worst result is a draw.
They are almost on the same page and there is no way that things can make any difference and if you look at it the highest just the way you are talking about it, there is a very high chance that they might end th game in draw because Chelsea might choose to surprise everyone if not for that I don't expect much from any of them and Chelsea is even my favorite in this game but we have to just, amd of Chelsea is playing home then they should not be that bothered because them playing home might even boost there moral.
But we know that sometimes we can not predict most of this games so we have to be careful when predicting a winner and at least Chelsea's performance is not that bad but anything can still happen and since they have not been a good sharp they might want to win this particular game against Bournemouth, and Chelsea tried to get better this season but nothing is changing seriously.
The only thing that Chelsea wanted is for them to get better at what they do and they are not even after the trophy they know they don't have that capacity yet to chase this, they should just focus on improving there self this season.