Van Persie would be very reliable for a season or two. He would lead the line and has great touch/control on receiving a through pass.
That said, it would not be the ideal transaction given the age factor. The likelihood of his devaluating resale value makes the proposition relatively unattractive when compared and contrasted to Cavani, who in the age context, would offer better value.
Whatever happens if either player ends up playing at the Juventus Arena next season then it would represent a major step forward in strengthening the squad in readiness for two major campaigns.
A new goal machine and a Del Piero replacement are paramount objectives. A third purchase - a defensive central midfielder that plays the Busquets/ Mascherano role is the only other main requirement.