Hugging, embracing and handshakes were also banned.
“There were a few butterflies before the restart, wondering how it would go, like before the first game of the season in August,” said Mueller.
“Union Berlin, just like us, were well prepared, no handshakes before kick-off etc.”
“We came here with the goal of getting the three points,” added Mueller.
“We had a bit more security after the second goal.”