Chiesa turned down selection for last week's World Cup qualifiers, which left Italy in the playoffs in March. The Azzurri face a semifinal against Northern Ireland.
And Buffon insists Chiesa is in coach Rino Gattuso's plans.
He stated, "We're waiting for Chiesa, who's a few like him in Europe.
"But Rino has not left out anyone at home who does not deserve it. I repeat, it's the group that counts."