I read that Barcelona will not play in Camp Nou because it is not ready yet and they will break La Liga record when facing Valencia this Sunday in Johan Cruyff. By La Liga record, they mean the stadium with the lowest capacity ever!
I don't know why they picked this stadium and couldn't find another bigger one because the number of tickets will be very limited so less revenue for them at the time they are desperate for money..
Yes, it's a stadium with a capacity of only 6,000. They'll be playing in a stadium that UEFA considers a Category 3 stadium. Fans will likely be limited. Barcelona needs to complete Camp Nou construction as soon as possible and play in front of their own fans in front of a large crowd. I don't know why the match was moved to this stadium, but they could have played in a larger stadium.