i personally see adriano as the weak link in their team mainly because he is a natural attack-minded player, hence we can exploit a gap in behind their defense.
Less to stop Adriano, more just packing the midfield. Think we're going to play much more like a 4-5-1. Also perhaps hoping Arshavin can come on late and have an impact- he can't play the full 90 as we all know. Although this hasn't been the case lately and Arshavin been very good at his short passing but maybe Wenger thinks Rosicky will lose possession less often. Biggest problem with this for me is that Arshavin really is useful on the counter attack which is how we'll probably play.
Prediction: 2-1 Chesney to win it for us on penalties
I'm guessing Busquets is a good CB, if you think about it in the position he plays he is practically a third CB as he plays ridiculously deep. I can see a 3-1 win for Barca in all fairness. Playing RvP is a big risk, you could be effectively loosing the Premiership and getting kncked out tonight if he gets injured - because he's about the only one you can count on to score goals.