If we really sought to replace Alexis or buy someone to play up front, we should buy a proper striker who can play on the wings or at least a great finisher, someone in the mold of David Villa or Samuel Eto'o. One problem we have right now is that Messi is the only great finisher in the team - Neymar, Alexis and our entire midfield are decent finishers at best and Pedro seems to have lost it too. Despite everyone's concerns, I think Agüero would be a perfect fit for Barça's right wing, but his price tag is hefty.