Barcelona would make use of a solid striker right now. There is not much time left for the end of the transfer window and Barcelona must act quicker than this. They shouldn't leave the striker transfer to the summer. They are experiencing big problems on scoring multiple goals in a game and this is why they are struggling in each one of their games in their league. If they solve the striker problem, then they can play stronger than ever. But they don't seem like they will go for a striker now. The Aubameyang speculations are still existing but we will see if they will finish this transfer.
The problem with Barcelona looking for a better striker is that they will need to pay a lot of money for the striker which is not something that Barcelona wouldn't like to do under the situation they are in.
Maybe they are thinking that they would save up and bring a really good striker in their team but the problem is maybe a striker who is really costly to get might not want to play for Barcelona has. So it's a dilemma which Barcelona needs to solve.