Robin is 3.5 years older - 29 during the upcoming season. He could be a striker at Juve for the next 5 years, for sure - he would be 33 when his 5th season is complete.
Point of interest - and a stat that could be used for or against in this Cavani/RvP discussion - out of the top 7 Serie A goal scorers last season, only Cavani is younger than 30. The eighth top scorer? Giovinco. Jovetic is 9th *Edit: but is 22 coming off major surgery, and played 27 to Seba's 36 games.* Christmas is 34, Milito & Miccoli are 32, Zlatan, Palacio, Denis are 30...
Cavani is who I would ultimately like as well - all things being equal - but he's definitely not worth that much. If RvP is approximately worth 30M, you're talking about a valuation of approximately 55M for that Naples dog - going into the pocket of a rival. We could (potentially) buy RvP, keep Matri, and have 10M for a LB/LWB - or to put towards a striker in a year or two. Or, try to sell Matri for 15, and there's 25M extra bucks... which should be very close to Jovetic's value. I think Fiorentina are probably trying to deal at around 30M, but that's a wild guess.
Jovetic would be amazing, and it does seem like a brilliant opportunity to snag a potential top class player. An offer of Giovinco + 5-10M would be very, very interesting.