The prospect of facing Real Madrid at the Santiago Bernabeu would send shivers down the spine of even the European elites.
Juanito, former Real Madrid forward, after a first leg 2-0 defeat to Inter Milan in the 1984/85 European Cup had warned, "90 minutes at the Bernabeu is a very long time." In the return leg, Madrid decimated Inter 3-0 and progressed to the final.
Although Juanito and his phrase still echoes around the streets of the Spanish capital, the gates of the fortress have become vulnerable in the last couple of seasons.