Postpublished at 21:07 British Summer Time 17 April 2019
Man City 3-2 Tottenham (Agg 3-3)
It's the Spurs fans who can be heard at the start of this second half. The City supporters try their best to whistle and drown them out.
Sterling curls in to level City-Spurs tie before Son scores twice in three mins
Bernardo Silva, Sterling & Aguero swing game City's way
Llorente wins tie for Spurs, after VAR review for potential handball
Mane, Salah, Firmino & van Dijk send Liverpool through to face Barcelona
Matthew Henry
Man City 3-2 Tottenham (Agg 3-3)
It's the Spurs fans who can be heard at the start of this second half. The City supporters try their best to whistle and drown them out.
Porto 0-1 Liverpool (Agg 0-3)
Roberto Firmino is on at half-time for Liverpool, replacing Divock Origi.
Man City 3-2 Tottenham (Agg 3-3)
Off we go again. Will the second half be anywhere near as good?
Text 81111 (UK only).
Poch clearly thinking they'll need to score again, with his choice of Llorente to come on. Seems sensible, given how this bonkers game has gone thus far
Dave, Bedford
HT: Porto 0-1 Liverpool (Agg 0-3)
The offside decision for Sadio Mane's goal for Liverpool could hardly have been closer. It was disallowed originally but the decision was overturned after a lengthy pause for VAR.
Porto have had 15 shots but haven't scored. Liverpool have had four and have.
They're 3-0 up on aggregate. The hosts have to score four times in the second half to go through.
HT: Man City 3-2 Tottenham (Agg 3-3)
Just joining us? This...
4th min: Man City 1-0 Tottenham
7th min: Man City 1-1 Tottenham
10th min: Man City 1-2 Tottenham
11th min: Man City 2-2 Tottenham
21st min: Man City 3-2 Tottenham
HT: Man City 3-2 Tottenham (Agg 3-3)
Brazil v Germany in the 2014 World Cup with Germany 5-0 up at half-time is the only one that comes close for me.
#bbcfootball
Mark Brandon: Is it worth asking the question, what half of football have you ever seen more incredible than CityvSpurs? (I'm thinking, Reading v Arsenal in the Cup when they went 4-0 up?
Phil McNulty
BBC Sport chief football writer at Etihad Stadium
Wow - a sensational 45 minutes.
Spurs still have their noses in front on aggregate but who would bet against more goals? Time to have a lie down.
HT: Man City 3-2 Tottenham (Agg: 3-3)
Alan Shearer
Former England captain on BBC Radio 5 Live
What a game of football that was. I expected goals but not as many as that. The way both teams went at each other was incredible.
Some of the goals were breathtaking and the players will need this half time just to catch their breath and reflect on what went right and what didn't.
Man City 3-2 Tottenham (Agg 3-3)
Mauricio Pochettino was running off down the tunnel when the half-time whistle went at the Etihad.
It may have been absolute madness but his side are going through as things stand.
Porto 0-1 Liverpool (Agg 0-3)
James Milner almost squeezes one inside the post with the last kick of the half.
Liverpool are well on their way to the last four.
Man City 3-2 Tottenham (Agg 3-3)
You cannot get a more exciting 45 minutes than that.
Porto 0-1 Liverpool (Agg 0-3)
We're into two minutes of stoppage time in Portugal.
Man City 3-2 Tottenham (Agg 3-3)
Poor delivery. Spurs clear.
Man City 3-2 Tottenham (Agg 3-3)
Raheem Sterling wins a free-kick in an inviting position on the left wing...
Man City 3-2 Tottenham (Agg 3-3)
Three minutes are added.
That's enough time for two more at least.
Man City 3-2 Tottenham (Agg 3-3)
Kevin de Bruyne shoots from the edge of the box but doesn't catch it.
Hugo Lloris doesn't do a David de Gea and saves comfortably.
Man City 3-2 Tottenham (Agg: 3-3)
Alan Shearer
Former England captain on BBC Radio 5 Live
I think Dele Alli will just drop back bringing Son-Heung Min over to the left hand side. Lucas Moura is playing in that number 10 position and Fernando Llorente will be the target man.
Man City 3-2 Tottenham (Agg 3-3)
Crikey.
Son Heung-min almost bags his hat-trick, whipping a left-footed shot just wide.
Pep's face is a picture. He's got a hand on each cheek in sheer amazement of what is unfolding in front of him.