Porto scored with virtually the last kick of the game to win a scrappy, disjointed first leg.
There was very little to choose between the sides as the hosts looked to stifle our play at every opportunity, in a stop-start encounter.
Despite seeing more of the ball – and putting 10 corners into dangerous areas – we couldn’t break down the home side, and were hit with a sucker punch very late on.
Galeno curled home a wonderful strike from outside the area, giving David Raya no chance, meaning we need to turn the tie round at Emirates Stadium next month as we look to reach the last eight of the Champions League for the first time in 14 years.