Kovac warns Dortmund not to expect an easy ride against Union Berlin

Niko Kovac says Borussia Dortmund will face a totally different game against Union Berlin on Sunday, having thrashed the same opponents 6-0 back in February. Serhou Guirassy scored four goals when the teams faced off at Signal Iduna Park last season, as Union suffered their heaviest-ever Bundesliga defeat. Dortmund have won all six of their […]