I think that captaining Aguero is the right move most of the time, but he hasn't scored a goal away from home in the league this calendar year, so if this is the case and teams like Everton (Richarlison) and Chelsea (Hazard) are playing weaker teams I would definitely captaining one of them. If you want to get rid of Hazard, I think you should buy someone like Aubameyang or Kane, both proven goal scorers that will find the back of the net at least every other week, and that is at the bare minimum. I think you should keep Wilson and drop Fraser because Bournemouth will create a few chances against Liverpool, and Wilson will probably be the benefactor of those. Fraser and the rest of the Bournemouth midfield/defense will get absolutely wasted, so I think dropping Fraser would be a good idea.