Hertha Berlin have broke a club transfer record in buying Krzysztof Piatek for $29.7 million.

Piatek has scored just 6 goals in his last 28 matches at Milan, and is playing behind Zlatan Ibrahimovic.

German businessman Lars Windhorst bought a $156 stake into Hertha last summer.

The team currently sits in 13th place in the Bundesliga.