When Barcelona aren't busy stealing Arsenal's players they're usually winning trophies or being cool, which is why Alex Song wants to go there.
According to someone on Twitter I think (it was an actual journalist so it's OK) Barca have agreed conditional terms with the midfielder and now just have to organise a fee with Wenger for his transfer. Arsene, who at this point definitely cannot be arsed going through a whole annoying Monty Python haggling scene has said that Song doesn't get to go unless Cristian Tello moves the other way. And by that I mean he moves to Arsenal, not that he moves to the dark side or turns gay. Or if he's gay that he turns straight. I think Wenger's fine with Tello just the way he is.