Izet Hajrovic: "A good idea"

Izet Hajrovic: "I think its implementation is a good idea, I had a good experience with it at the World Cup in Brazil. The spray makes sure that the free kick wall maintains the necessary distance. Besides, you spray it on quickly and it's gone right away. So there are no problems."

Source: http://www.werder.de/en/aktuell/news/50778.php