[EdgeSeek]

Given the very attack minded line-up of Barca and the words passed between clubs due to the Espanyol appeal, this could get ugly coupled with this being a local derby as well.
You are right in that it is hard to call as Barca can always hit on the counter as they have astonishing speed. There is no real motivation to go for it but the inherent nature of this team is very attack minded. Not sure if they can hold back.
Coupled with the need for Espanyol to try to get an early goal, perhaps a "safer" bet, if there ever is one is to go for Overs...? After all, Barca fans at home will always scream for lots of goals...

Small punt of the Overs then... :-)