I'm personally quite surprised that you are talking and the Las Palmas-Bilbao match instead of Clasico. Well, it's closer, but for me, Clasico is more interesting. In any case, I see a victory of Barça, because home factor and Bale injuried is too much for Real Madrid.
From tomorrow you will see all posts talk about the Clasico, it is very exciting match, but Barcelona destroyed something when they got only one point against Real Sociedad, there are 6 points difference between both teams. other thing, I think the Clasico time is a bit early this year.
Sometimes top teams play better when they are playing against better top teams. It brings out all the motivation to win and the best in them. Barca cannot show up and look like the way they played against Real Sociedad in front of their fans. It will be a disgrace.
Real Madrid can still cope without Bale. So I disagree with the comments that they will be having a hard time at the El Clasico.