Bayern Munich followed up the qualification for the Champions League semi-finals with a 5-1 thrashing of Union Berlin to cap a perfect week. Coming off a 1-0 mid-week win against Arsenal, Bayern had a slow start but were ahead in the 29th thanks to Leon Goretzka. Union seemed close to an equalizer, but it was the guests again to find the net with a stunning free-kick from Harry Kane shortly before the break. Goals from Thomas Müller and Mathys Tel put the game to bed already in the 62nd, before Müller completed a brace in the 66th to celebrate his 400th start in the Bundesliga. Union, however,…