Napoli took the lead in the 39th minute when Scott McTominay rose unmarked in the centre of the box to head in a corner. It was a bitter blow for the hosts, who had just lost a player after Thomas Delaney was sent off four minutes earlier for a reckless foul on Stanislav Lobotka.

Despite their numerical disadvantage, Copenhagen defended resolutely in the second half, and the turning point came when Napoli's Alessandro Buongiorno fouled Mohamed Elyounoussi in the penalty area in the 71st minute.

Midfielder Larsson, who came on for Elias Achouri, saw his penalty saved by keeper Vanja Milinkovic-Savic but the Swede got to the rebound first and equalised a minute later.