"It's the most important and decisive game of our season," Brienza admitted, "We are 100 per cent focused.
"Empoli are a tight side and they have the same squad that reached the UEFA Cup last year. They will also be determined to win, so we need to be at our best.
"But the Stadio Granillo is our strength and on Sunday it will be a cauldron. Our fans support us even in the difficult times."