I do agree with what you're saying. But 15 million for what he displayed so far is way too much. It's 4 goals in 2 years man.
You have to look at position, profile and they most likely taking into a account youth footie pedigree. He is a CF, auto hike on price for that alone, 19, Italian, very physical box striker but alright technique. Already seen as future option for NT etc.
All in all double figure sum makes sense as what Genoa would ask for after fostering said talent. But he is still raw talent, so price being 10-15m makes sense.
Also its a sense of gambling on future growth, so IMO 15m is neither shocking or that much. Its almost bare minimum expected for type of profile.
Not everyone has weird low release clause like Liberali. Who I also hope we sign and see if he pans out, in loan or with us. Because 6.5m is nothing. Just like I dont think 15m is that regrettable of a sum for future investment.
Carnevali has a catching up to do update Juves process of getting back in early on young domestic talent. So the earlier he targets them the better for us IMO.