Complex sentence: The winner will also play in the 2014 DFL-Supercup: as Bayern have won the Bundesliga, if they win the DFB-Pokal, the league runners-up will be their opponents in the Supercup.
Split into simpler sentences: The winner will also play in the 2014 DFL-Supercup. As Bayern have won the Bundesliga, if they win the DFB-Pokal, the league runners-up will be their opponents in the Supercup.