No one will pay 40m for him. They say he wants to stay in Italy. Inter can't afford him, or anyone for that matter, every other big team in Italy have their striker.
25m is a generous offer, especially when they sold Locatelli for a two year loan, with 25m option, and then 12.5m in bonuses.
Scamacca should learn from Belotti, don't renew with Sass, you will get stuck there. Juve, Napoli, Roma, Lazio, all have their striker, and I bet Belotti goes to Atalanta if he doesn't stay at Torino.
Maldini should offer a loan with option, just like Juve got with Locatelli, following Euro winning hype.