By Tom Victor Union Berlin manager Nenad Bjelica sparked a massive brawl during his team’s defeat to Bayern Munich after shoving Bayern winger Leroy Sane in the face. The incident occurred during the second half of the rearranged tie at the Allianz Arena. The game had originally been due to take place in early December, only for heavy snowfall to see it postponed. When the teams finally had their chance to face off against one another, Bayern got their noses in front through a Raphael Guerreiro goal early in the second half. It was still 1-0 with a little over 15 minutes left on the clock, whe…