No great ones at this moment imo. Though El Shawhatshisname is getting there. Did not expect him to become this good/important this fast. Don't care for Balotelli. The talent is obviously there, but he's just way too erratic & unreliable to ever become a true great.
Other than that, there are quite a few reliable players (Pazzini, Matri, Osvaldo, ...) but none of those are particularly great. They all have reasonably ok stats & records, but you know what you're (not) going to get. Personally, I'm still interested to see how Rossi is going to turn out for Fiorentina. For some reason, I think he's going to be a positive surprise.
I barely know anything about up & coming youngsters, so can't say anything about them.