Tardelli says Scamacca must go to the Euros with Italy this summer.
He said on Vivo Azzurro TV: "I hope that a fantastic European Championships will be told. This national team has good prospects, it has been built well and I have faith in Luciano Spalletti that he can make the team grow also for a World Cup, not just for the European Championship.
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"Scamacca is doing extraordinary things, when Spalletti rested him perhaps he thought it was time to get busy.
"Scamacca (must go). If he goes well, everything goes well.
"We have good midfielders, I always focus on (Nicolo) Barella because he is the most important man."