"Of course he's upset, he's only 18," Milan coach Gennaro Gattuso said after Wednesday's match.
Donnarumma in tears after Milan fans jeer him →
"It hurts. A knife wound would have been better than this goal," Gattuso said. "We're Milan and we need to be better, because this isn't enough."
Gattuso's Milan debut ends badly as Benevento 'keeper scores →