Ideally both he and Eder would be sub options - target man to hoof to and energetic late sub respectively - but I can see why Ventura would stick with trusted, they did well enough in the Euros. Pellè is dumb because it's given Ventura an easy way to throw him away.
Immobile, Belotti, Balotelli, Gabbiadini, Sansone, Insigne, El Shaarawy, Zaza, Berardi, Pavoletti, Eder, Pellè. Those options point towards a 4-3-3, it's a dilemma considering the central defensive setup.