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Nicol: Atletico waited too long to change their tactic vs. Man City (1:41)

Steve Nicol thinks that Manchester City should have played more attacking football in the game. (1:41)

7:29 PM ET

Police had to intervene after an altercation broke out in the tunnel at the end of the game.

City will face Real Madrid in the semifinals after holding off a late rally from a much-improved Atleti in the second half at the Wanda Metropolitano.

There was a brawl in the tunnel after Felipe was sent off for a challenge on Phil Foden in the 91st minute.

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TV images showed a man trying to confront Jack Grealish, having pulled the City player's hair in the melee after Felipe's red card. Kyle Walker was held back by Ederson before police officers arrived to restore order.

The game can make you angry, when you put them under pressure and create chances, and they go down, wasting time, Koke said. Let's see what people think about it today.

The players of Atleti were angry that City tried to run down the clock as they protected a first leg lead.

In a tense game like that, it can happen, according to Atleti goalkeeper Jan Oblak. What happens in a game stays there. It was a good thing for City.

Aymeric Laporte hit back, saying that their team was getting into absurd fights.

We already know how they do it. A lot of fuss is made with little to see these fights. I think it was bad for them because they were in their best moment.

Atletico Madrid and Manchester City players square off during their Champions League matchup. Getty Images

Rodri admitted that there are times when time-wasting is necessary.

Rodri said that they have to play with other weapons when they are locked behind.

I am not in favor of doing it all the time. The field has what stays in it. I don't know what happened to Felipe, but it's not nice.

Both Oblak and manager Diego Simeone said they had not seen what happened in the tunnel, as they had remained out on the pitch to thank the fans.

I didn't see it. The coach said that he was with the players, applauding the fans, when he went up the stairs.

I didn't applaud the opposition bench, I applauded our fans, but still appeared irked by the man.

People with a large vocabulary tend to praise you with disrespect, but those with a smaller vocabulary are not so stupid.

Football has many aspects. I will not give an opinion on how the opponent acted. We will focus on ourselves, playing against the best team in the world, and knowing we could compete. The only thing that makes me happy is winning.