There's a signal to Andy Robertson and he runs back to the dugout, looks like he is going to have to come on for Konstantinos Tsimikas.

Sony Kaba heads wide from Paulinho's decent cross. Kaba is certainly causing Liverpool's young defence a lot of problems.

There's a break in play at the moment with Konstantinos Tsimikas receiving treatment after getting his leg caught when making a challenge.

Ten minutes into the second half and we've not had a Liverpool attack yet. The visitors are having to soak up a bit of pressure from the hosts, who are perhaps looking to try and catch out some of the Reds' young players.

Now Konstantinos Tsimikas blocks a shot from the lively Sony Kaba.

Great start to the second half by the hosts.

It has certainly been a testing introduction for Billy Koumetio and the Liverpool defence as Evander is onto a loose ball inside the box but his effort smashes against the crossbar before Sory Kaba shoots wide.

Billy Koumetio heads a cross out for a throw with his first touch of the ball. FC Midtjylland win a corner soon after and Koumetio takes charge to head clear.

Sergio Ramos is back in the Real Madrid XI for the first time in a month following injury.

Lucas Vazquez keeps his place at right-back, with Dani Carvajal on the bench.

Toni Kroos, Casemiro and Luka Modric all start in midfield for the first time this season.

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Borussia Monchengladbach make two changes from their weekend Bundesliga draw with Freiburg.

Defender Nico Elvedi returns from injury and Marcus Thuram is back in the team.

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Another youngster is getting his chance to impress now.

French 18-year-old defender Billy Koumetio is on for his debut, replacing Fabinho. There's a big, beaming smile on Koumetio's face. What an opportunity.

We are back under way.

Manchester City boss Pep Guardiola makes nine changes to the XI that started the 2-0 win against Fulham last weekend.

Midfielders Ilkay Gundogan and Riyad Mahrez remain in the side, while defender Nathan Ake starts for the first time since the 3-0 win over Olympiakos in November.

Reserve goalkeeper Zack Steffen makes his Champions League debut.

Man City XI: Steffen, Walker, Garcia, Laporte, Ake, Fernandinho, Gundogan, Bernardo, Mahrez, Foden, Torres. Subs: Carson, Stones, Sterling, Jesus, Aguero, De Bruyne, Mendy, Cancelo, Nmecha, Doyle, Palmer, Bernabe

Marseille XI: Mandanda; Sakai, Alvaro, Balerdi, Nagatomo; Sanson, Kamara, Gueye; Thauvin, Germain, Payet.

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Image source, .

Paul Reilly: I’ve been watching Kelleher since he started in the youth teams. My only concern is keeping him. He’d walk into most teams as No, 1.

LivGoss: Not watching but following on text. Kelleher hardly gets a mention. He just keeps it simple and goes quietly about his business. When it's Adrian, the keeper gets lots of mentions...

Kaushik Gorai: The sight of injured Alisson and Adrian in goal is no longer a worry for Liverpool fans. Step up Kelleher!

Caoimhin Kelleher is halfway to becoming the first Liverpool goalkeeper to keep back-to-back clean sheets in his first two Champions League games.

FC Midtjylland haven't had a lot of chances but they have had their moments. He will still need to be alert in the second half.

Good effort right on the stroke of half-time as Naby Keita hits a stinging strike at goal but it is too close to Jesper Hansen.

Manchester City striker Sergio Aguero is on the bench, having played for only 12 minutes since he was replaced at half-time against West Ham on 24 October.

The 32-year-old has only played four times since injuring his knee in June.

Man City XI: Steffen, Walker, Garcia, Laporte, Ake, Fernandinho, Gundogan, Bernardo, Mahrez, Foden, Torres. Subs: Carson, Stones, Sterling, Jesus, Aguero, De Bruyne, Mendy, Cancelo, Nmecha, Doyle, Palmer, Bernabe

Caoimhin Kelleher saves well at his near post from Awer Mabil before Jesper Hansen produces an even better save at the other end from Diogo Jota's drive.

End-to-end as the half heads towards its end.

Good play by Divock Origi as he holds the ball up and then sprays it out wide to Trent Alexander-Arnold. The full-back powers up the pitch but his low ball towards the box is cleared.