Firstly, it's a really bad comparison. Caceres is nowhere near as good offensively as Adriano, besides his heading. He can neither cross or create and both of these features are essential for a wing back. Secondly, yes, Adriano is not the most reliable defender, but the plan is to play him at the LWB position, where a player doesn't have to be a superb defensively. The defensive abilities that he possesses are more than enough to feel safe when that left side in being attacked. Finally, his passing, crossing and shooting is way better than anyone's else in our team. I would say yes to Adriano.