The former Bournemouth starlet received a straight red card for bringing down Mikel Oyarzabal, with the referee ruling that the Sociedad striker had a clear path to goal.
After Huijsen’s dismissal, Arda Guler scored a second goal just before halftime, helping Real Madrid secure a hard-fought victory despite Oyarzabal converting a late penalty.
Alonso noted that the 22-year-old defender was “relieved” his error did not cost the team the game.
"For me, it was a yellow card. Mili was close by and the ball wasn’t under control. After watching the replay, I haven’t changed my mind. I asked, he gave me his explanation, and I wasn’t convinced,” he told the media.
“And I’ll leave it at that. It changed the context of the match, and we played with 10 men for 60 minutes. We had chances and scored the second goal to give ourselves some breathing room.
“The team knew how to sacrifice themselves and put in a generous effort. Winning at Anoeta is always very difficult, and today, if anything, it was even more difficult.”