As far as I know (correct me if don't), Juve is spending just profit money. So that means, that we are never under the limit level. So we're not like Chelsea with Roman A. or Real with media stars in its team. Face it, out of stadium tickets we get almost nothing compare to Real, barca, Man U,...
We've got certanly rich sponsores (Fastiweb I think) but, that is just not enough. We can't just every season spet 30M€+ money for transfers. Don't expect too much of these year summer guyz. Last year we spent 30 M€, this year I would be very happy if we coluld exchange Mutu+Nonda +some money => Cassano and buy one defender ( Barzagli or Miguel, I prefer the last one). So everything would cost ther around 10 M€. (we exchange Del Piero, so we get around 8 M € for him + Barzagli).
Thats my vision of these transfer summer.