If you tell me that there is another RB in the world today, that could score two goals against a side like City in a CL knockout fixture, than you must really hate Alves.
And if you tell me a RB at Barcelona must be ZERO in offense, than you are mistaking Barcelona with Inter or some other seria A team. We attack more than we defend and we need a player who can understand and share the offensive appetite of a team like Barcelona. And Alves provides good enough defensive stability. In case you didn't notice, we were solid in defense in all big games this season, except the Bernabeu match. And that with Alves on the right side. He was one of our best men in the clasico on Camp Nou, decisive against Atletico in the Supercup, scored that great goal on the Ettihad vs. Man. City, the one that made our life a lot easier on Camp Nou. What more do you want?