The Italy international attacker is joining La Dea from Atletico Madrid in an outright deal worth a mooted €22m.
Raspadori is undergoing a medical today ahead of signing terms.
Palladino, ahead of their clash with Pisa, said: "He's a strong player who has completed the attack: he's raised Atalanta's level.
"I've always liked him a lot, and the club, being very ambitious, managed to bring him to Bergamo. We're very strong in attack.
"With the arrival of Raspadori, Atalanta has many options, in addition to the likes of Samardzic, De Ketelaere, Maldini, and Lookman, there's also Krstovic, who is doing very well.
"They know they have to push in training, but I'm very happy with them. I have a team ready for anything, where everyone knows how to seize opportunities."