If we were really ambitious we'd go for both Reus and Benzema, not just one of them. That's the sort of firepower we need to win the league. Benzema - Reus - Özil - Alexis would be as good as any attacking four in Europe basically. We have good players we could sell to bring in more money if we need to.
I know signings like these don't just happen out of the blue. They're usually the result of movements in the market. But maybe Arsenal need to instigate that movement for once instead of just trying to profit off of it. There's still a very annoying mentality surrounding the club when it comes to these things. Being "open minded" in the event someone becomes available is not good enough.