West Ham goalkeeper Alphonse Areola has admitted he and his team-mates were worried for their families in the crowd after players and fans clashed in Alkmaar.
The Hammers won 1-0 in the Netherlands to book their place in the Europa Conference League final, with Pablo Fornals' late effort sealing a 3-1 aggregate victory. However, things boiled over after the final whistle as players made their way over to the crowd to protect friends and family.
Managers of both sides have spoken out about the scenes, with AZ Alkmaar boss Pascal Jansen saying he was "ashamed" of the small number of home supporters who entered the West Ham section. France international Areola, who had family members watching in the Netherlands, has summed up the emotions of the players at the time.