The media source observes that there are currently four players that can take up the final place according to the ideas & strategy of Coach Tito Vilanova: David Villa, Alexis Sanchez, Cesc Febregas & Tello.
However there is another possible doubt that may be on the mind of the Barça Coach: Alves or Adriano. This arises due to the presence of AC Milan left-winger El Sharawy, Vilanova may opt for Adriano to hold down the potentially dangerous forward.
Thus far there is plenty of thinking at "Camp Barça" as they plan on how to turn around a 0 - 2 disadvantage from the first leg.
Either way the true winner will be the spectator as we all will be in for a great match of Champions League Football. I think Barça will be able to turn around this tie & go through to the quarter-finals phase, but this is just my hunch.