It is not about having targets but bringing it to reality is what matters. Barcelona don't have funds and they want to buy quality players but they don't want to sell players to have the finance to bring in these set of young players which they want.
In terms of Barcelona selling some of their players to get new ones, we should also consider the fact that majority of there players we are expecting them to sell may not worth much on the market, so perhaps before they could get one important player they must have selling up to three or four players before they could raise such amounts of money, so actually I believe that is one of the reasons why the club is finding it difficult to sell there players because right now apart from there first eleven I don't think their other players will probably worth much, so perhaps they must have been feeling that instead of wasting up to five players to get one experience player they could as well wait till they are financially stable before making any decision.