Manchester United boss Erik ten Hag admitted the red card changed his side's game against FC Copenhagen.
After losing 4-3 to the Danish giants, the Red Devils head coach spoke about the impact of Marcus Rashford being shown a straight red when United were 2-0 up.
Of the emotions after the game, Ten Hag told reporters: Yeah. It's clear. We are very disappointed, because you play very good. I think we started the game so well, the best minutes of this season. We are winning the game and I think the red card changes everything.
And then we concede two goals before half-time which should never have counted. The first is offside, the second is a penalty. Four penalties against [in the Champions League] and I'd say three are very debatable."
He then outlined what he felt about the decision, which the commentators and many pundits labeled harsh.
He added: It's also harsh. I think he went for the ball and the referee has such a long time. They need such a long time to make it a red card."