Bayern Munich midfielder Leon Goretzka believes his side are on the verge of more greatness as they prepare for Tuesday’s Champions League semi-final first leg at home to mighty Real Madrid. The two teams played out a memorable semi-final in 2012, which Bayern edged on penalties, but the Spaniards have come out on top in their most recent last four clashes in 2014 and 2018. Goretzka though was enthused by how Bayern played in their quarter-final against Arsenal, which belied the domestic form which has seen them lose out on the Bundesliga title for the first time in 12 seasons. “I think someth…