We paid £16.9m for Casadei.
He is absolutely worth at least that.
He just turned 22yo 8 days ago, so is still young, and will kick on with the right club, IMHO
In May 2023, he was included in the Italian squad that took part in the FIFA U-20 World Cup in Argentina. Having helped Italy reach the final, as the Azzurrini eventually lost to Uruguay, he received both the Golden Ball and the Golden Boot awards, as the most valuable player and the top scorer of the tournament with 7 goals.