Strange things happen when Inter Milan plays Barcelona in the Champions League semifinals. The last time the two teams met in the final four of Europe’s elite club competition, in 2010, Barcelona had to make a 15-hour journey by bus to Milan after an ash cloud caused by the eruption of the Icelandic volcano Eyjafjallajokull shut down air space.

Regarded as a strong favourite to be crowned champions of Europe for the first time in a decade, Barcelona have knocked out Benfica and Borussia Dortmund to reach this stage and are unbeaten at home in the competition so far this season.