Giovinco is a reserve.
A lot of players in Juve share the goalscoring responsibility. Was the same last season. Strikers like Quagliarella and Vucinic work harder than most midfielders. It's what make them dominant in the league and, at the same time, less dominang in knockout competitions. It's not a surprise that they went for Llorente who is an outstanding finisher with a strong work ethic and the proper technical requirements. They couldn't have found a much better match on paper.