that's indeed something to consider - maybe you'd need a decent 10-15 mil striker, while getting rid of Iaquinta, Amauri, Toni but nothing more than that up-front.
Juve management, however, seems to feel an obligation to give the fans the promised big-money signing and that may well turn out to be a needless move with lots of money spent on the wrong player.
Rossi is a pretty good player in his own right ... my doubts about Juve really needing him mainly come from you guys getting Quagliarella too.