You do know that Pio is three years younger than Sebastiano, and this ongoing season alone has surpassed the highest amount of goals (9 in 17 matches) that Seba has ever scored in a senior league (6 in Switzerland and last season's Serie B), right?
No denying that Sebastiano is showing up for Empoli right now - five goals for that side in Serie A is nothing to scuff at - but Pio is, seemingly, breaking through at a younger age with more impressive numbers, being right now the second highest goalscorer in Serie B at age 19. Sebastiano has never come close to anything like that. Pio had 15 goals in 30 matches with our primavera at age, Seba had 3 in 13, and so forth...
Seba was expandable, although I don't think it's very unrealistic that we'll see him back here in a season or two, whilst Inter are, based on reports, shutting down every club reaching out for Pio. The club knows he's on a different level.