To what end? We're not looking to attack. This is about sending out the most defensive side possible, right? Also Mata can't create much when we have 25% possession... Alternatively to Bosingwa, we could try Bertrand on the left wing. But Bertrand would never have played in an occasion like this, in front of 90,000 passionate Barcelona fans. I think he'd be a bit rabbit-in-the-headlights.