Personally, I'd ease Gana back in and would leave him on the bench for this one. Bournemouth are usually quite open and let you play, so I'm not sure we need an excess of tackling midfielders to play them at home.
I also think it's harsh to drop Holgate based on one bad game, when he's been generally excellent otherwise. I agree with others that Lookman will start over Mirallas.
Holgate Williams Funes Mori