Gab Marcotti explains how Hertha Berlin may win the battle for Krzysztof Piatek this January. Stewart Robson doesn’t see why Tottenham would sign Krzysztof Piatek as a temporary replacement for Harry Kane. Coppa Italia: Krzysztof Piatek (20′) AC Milan 1-0 SPAL. Watch Coppa Italia on ESPN+. Hertha Berlin have signed Krzysztof Piatek from AC Milan,